Jay-Z held court at LIV at the Fontainebleau until just after 4 am for the highly anticipated Imagine Sundays party which he was scheduled to co-host with Kanye West, who was a no-show.   The party was to promote Jay-Z and West’s new album, “Watch the Throne.”  In lieu of performing, Jay-Z hung out behind the DJ booth and spent an unprecedented $250, 000 on Belvedere and Armand de Brignac champagne- setting the record for the most money ever spent by an individual at LIV, on a single night. The mogul reportedly left a $50,000 tip.   

Earlier in the week, Pete Wentz and his band, Black Cards performed at LIV.

Not a “sighting” per se, nor technically a “celebrity” (but it IS summer in Miami so pickings are slim)- Mike “The Situation” Sorrentino & Boca Tanning Club announced a partnership last week, so expect to see a lot more of this extra crispy Jersey Shore “star,” who coined the acronym, “GTL” (Gym, Tan, Laundry).  Sorrentino says the “T” now officially comes courtesy of Boca Tanning.

Bridesmaids star, Rose Byrne made her first visit to Miami Thursday night for the W South Beach’s Symmetry Live concert with electro-pop sensation, Theophilus London in celebration of the hotel’s two year anniversary. The Australian actress wore a delicate couture top and short leather skirt by her hometown designer Zimmermann. She lounged in a poolside cabana and made plans with friends for the rest of the weekend.

 Actresses from the new ABC series Charlie’s Angels, Minka Kelly and Annie Ilonzeh, dined at The Forge Restaurant | Wine Bar on Friday night.  Kelly, who happens to be Derek Jeter’s girlfriend and was named Esquire’s 2010 “Sexiest Woman” did not disappoint her admirers, looking stunning in a beige summer dress.  The girls arrived at 8 p.m. and sat in the main dining room. Despite missing the third “angel” from their trio, the two girls chatted all night, drank wine and shared everything from a few appetizers to entrees which including a stuffed lobster and a three mushroom risotto. 

Burn Notice actor, Jeffrey Donovan, was seen dining at the newly opened Vic & Angelo’s on Ocean Drive on Saturday night with his girlfriend who was accompanied by Ocean Drive magazine editor, Suzy Buckley.   

Teen heartthrob, Justin Bieber was in Miami visiting recovering music sensation, Sean Kingston.  Bieber was seen lounging by the pool in his skivvies and driving around Ocean Drive with Kingston before being mobbed by fans and requesting police protection.

Maria Menounos , Shay Todd, and Adrienne Bailon

Last week at Villa Vecchia, the estate of Norma Quintero, designer Shay Todd showcased her 2012 Resort and Swimwear collection to editors, socials and celeb gal pals, Maria Menounos and Adrienne Bailon during Mercedes-Benz Fashion Week Swim 2012.

 Cosmopolitan en Español hosted their 5th Annual ‘Summer Splash’ at the Setai hotel.  Those who stepped out in style were notable VIPS and celebrities including Rock of Ages star Diego Garcia, supermodel and one of People magazine’s most beautiful people Omyra Mota, singer Jon Secada, actor Alejandro Chaban, NFL greats, Chip Vaughn of the Indiana Colts and Ahmed Bradshaw from the New York Giants and fashion designers:  Lisa Pliner, Inca Swimwear founder Stacy Josloff, Nani and Kaki Lopez of N&K Designs, and Maya Swimwear designer Carolina Dinardi.  Also seen in the packed-house was Haven owner, Michael Bowles.

This past weekend, Alicia Keys was red-carpet ready for her performance at the Zo’s Summer Groove Benefit Dinner Gala. Keys took the stage wearing a Louis Vuitton Tiger Tweed Lurex Jacket and Silk Lurex Pants.  Guests at Zo,s Summer Groove included Cee-Lo Green, Dave Chappelle and Carlos Mencia.

Jennifer Lopez

Jennifer Lopez, with manager, Benny Medina; her stylist and a

group of six girls dined at The Forge Restaurant | Wine Bar at 10:30 p.m. Friday night to celebrate part one of Lopez’s birthday weekend.  Towards the end of dinner, Lopez was surprised with a birthday chocolate soufflé for dessert.  Lopez celebrated round two of her birthday on Tuesday at Scarpetta in the Fontainebleau.

On Saturday night, tennis pro, Gabriela Sabatini, dined with three friends at db Bistro Moderne in the JW Marriott Marquis.

Several cast members of Rock of Ages reportedly partied at Lucky Strike on Saturday night, including Tom Cruise, Paul Giamatti, Bryan Cranston, Malin Akerman, Julianne Hough and boyfriend, Ryan Seacrest.

Seacrest and Derek Hough, Dancing with the Stars dancer and Julianne’s brother, were spotted at WALL lounge at the W Hotel in South Beach.  

Avoiding Miami’s sweltering heat wave, The Real Housewives of Orange County’s Alexis Bellino, who was in town to both launch her new clothing line Alexis Bellino and celebrate her husband’s birthday, spent her time cooling off at National Hotel Miami Beach and other Miami hot spots. The couple dined at The Forge Restaurant | Winebar, where she became so enamored with the s’more soufflé and he with the enomatic wine machine, that they were overheard saying that despite having dined in a variety of Miami restaurants, the culinary landmark was by far their favorite experience and in a league of its own. Afterwards, Bellino and husband stopped by WALL for some celebratory cocktails.

 Local favorite, Chef Michelle Bernstein made a special appearance on Good Morning America.  The seasoned James Beard award-winning chef tackled filleting a Florida lionfish and preparing it to perfection.

Chrissy Teigen and John Legend

Love was in the air Thursday night for Shakira, who was spotted at WALL Miami lounge alongside her steamy Team Barcelona soccer star boyfriend Gerard Pique. The Latin sensation was unafraid of public displays of affection and was seen dancing closely with Pique, stealing kisses and holding hands all throughout the night.

Ocean Drive magazine and BankUnited celebrated Mercedes-Benz Fashion Week Swim 2012 at W South Beach on Thursday night. Cover star Chrissy Teigen arrived to the party of over 500 guests with friends, fellow IMG models and boyfriend John Legend. Partygoers enjoyed Grey Goose vodka “Summer Soiree” cocktails and “spiked” popsicles while SmartWater provided a much needed boost of hydration from the Miami heat.

On Saturday, Maria Menounos was a guest at the iRenew Bracelet Beauty Bungalow outfitted in a flowing Shay Todd bikini. The Access Hollywood host was signing her new book for guests and feeling “energized” by iRenew’s bracelets. Later that evening, Menounos, was seen dining with friends at the new Italian restaurant Dolce Vino in South Beach.

  John Legend, who has joined Sade’s “Once in a Lifetime” North American Tour attended the Miami show’s after-party at sexy restaurant and nightclub, Aizia, in Ft. Lauderdale. Legend interacted and surprised VIP patrons by serenading them with an impromptu performance of his hit song “Ordinary People.”

Whitney Port and Shenae Grimes

Recently single Whitney Port seemed to be making the most of her new bachelorette status at Saturday night’s celebration for Skintimate Limited Edition Designed Cans by Mara Hoffman at the W.  Though she arrived with just one girlfriend, the MTV star snuck into the W South Beach for a quick pizza dinner before returning to the Wet Lounge with a small entourage.  The group multiplied from there with nearly twenty friends packing into Whitney’s private cabana as they enjoyed UV vodka cocktails and a front row seat for the synchronized swimming performance.

90210‘s Shenae Grimes also walked the pink carpet for the celebration. The TV starlet showed up to the event with her new boyfriend, DJ Brendan Fallis, on one arm and an over-sized Polaroid camera in the other.  After snapping a shot of herself with reality star Whitney Port, Shenae turned her Polaroid on the eager flashbulbs of nearly two dozen photographers before kicking back in a private poolside cabana to check out her photography skills. The event featured live performances by celebrity DJs, the up-and-coming blonde Australian combo, Nervo, Mia Moretti and Caitlin Moe.  

WALL celebrated its second birthday late on Saturday night. In attendance were Nicky Hilton, Ice T and his wife Coco, Marc Jacobs’ ex-beau Lorenzo Martone and rapper Maxwell. International mix-master DJ Sharam took the turn tables first and electrified the crowd, followed by Nervo. At one point they were joined in the DJ booth by Ice T, who got on the microphone to give a shout out to WALL on its 2 year anniversary

 The 15th Annual American Black Film Festival Honors awards ceremony at the Fillmore Miami Beach was a big celebrity draw over the weekend.  NFL star and Cincinnati Bengals wide receiver Terrell Owens laughed it up with actor and ABFF Honors Awards Host Anthony Anderson in the VIP Grey Goose lounge before the ceremony began. Also spotted in the Grey Goose lounge were Regina King (the evening’s other ABFF Honors Award host) and actress, Naturi Naughton, who received the 2011 Grey Goose Rising Icons Award.  Damon and Marlon Wayans, arrived together to support brother Keenan Ivory Wayans, who received the night’s Entertainment Icon Award for his success in the entertainment industry.  Eric Benet stopped for interviews on the red carpet and Don King brought with him the usual fanfare. 

On Friday night at The Forge, the recently named Undisputed World Heavyweight Champion Lennox Lewis – dined with owner Shareef Malnik and his girlfriend/actress Gabrielle Anwar, as well as Chicago Bulls player Carlos Boozer who enjoyed a bone-in filet main course and company with a Dolphins Cheerleader calendar cover girl for dessert (insert meat joke here). 

This weekend Acqualina Spa by ESPA hosted NCIS star Cote de Pablo, Lynn Collins of X Men Wolverine and Steve Strait who is currently shooting the Starz show,  Magic City.

On Sunday night, Lenny Kravitz dined with 13 friends at Zuma Miami.

Prior to their Miami performance of their 360° Worldwide Tour, Bono, The Edge, and entourage headed to Wynwood Kitchen & Bar on Tuesday night.  The band-mates were spotted taking pictures with staff and signed a menu for restaurant co-owner Jessica Goldman Srebnick. U2’s drummer Larry Mullen Jr. dined with family and friends at Miami Beach’s hip Quattro Gastronomia Italiana located in the heart of Lincoln Road, where they enjoyed the restaurant’s Northern Italian cuisine and wines well into the night.

On Thursday night, Bono was spotted at WALL Miami lounge capping off his concert week with a champagne-infused party session that lasted until 4 a.m. The lounge’s owner, South Beach nightlife impresario Nicola Siervo stopped by the table to congratulate Bono on the sold out U2 concert performance Wednesday night, where the group debuted a new song titled “North Star” for over 75,000 screaming fans. Always the gracious host, Siervo got behind the bar at one point to make Bono a margarita. Also in attendance was Real Madrid soccer star Mesut Ozil.  Florence and the Machine, and actress Malin Ackerman were spotted at WALL earlier in the week.

Katie Holmes held a surprise 49^th birthday dinner for Tom Cruise at the Soho Beach House on Saturday night.  The couple checked into the House early on Saturday, taking over the spa area.  Cruise’s son, Connor Cruise, sporting a Chicago Bulls jersey,  and freshly inked fake tattoos, sat poolside, talking to hotel guests about his work on the remake of Red Dawn, due out later this year.

Also spotted beachside at Soho Beach House on Saturday was rock/pop star Rod Stewart.