Just a day after performing at the Latin Grammy Awards in Sin City, singer David Bisbal was spotted walking the red carpet at the Spain-United States Chamber of Commerce's 30th annual gala at the Biltmore on Friday night. The singer attended with pregnant girlfriend Elena Tablada. Bisbal, who received the Universal Spaniard Award, gave a surprise performance to an enthralled crowd.

Seen dining at Mr. Chow Saturday night: Calvin Klein, a male friend, and photog Bruce Weber, who was also spotted lunching at Michael's Genuine Food & Drink on Friday. Seated nearby, World Series ring-wearer A-Rod and pal Ingrid Casares, and, at another table, filmmaker Michael Bay and designer Tommy Hilfiger.

NBA legend Charles Barkley was seen throwing back shots of tequila in the Redroom at Skybar Friday night. Barkley, who dined earlier that night with Dennis Rodman at Prime Italian, arrived after midnight and stayed several hours.

Writer Elizabeth Alexander, who launched the Miami Book Fair International with an English and Spanish reading of her poem Praise Song for the Day (which she read at President Obama's inaugural), dined at BLT Steak at the Betsy Saturday night with Miami poet Campbell McGrath and friends.

Dwyane Wade celebrated his mom's 55th birthday at Cafe Martorano Friday night. Also in the house: rapper Fat Joe. The next night D. Wade was seen at Cameo for The House of Hennessy Black party, where rapper Fabolous performed his new song Throw it in the Bag. Fab was later joined on stage by hip-hop wunderkind Jeremih to debut their single, My Time.

Bowling with pals Friday night at Lucky Strike: tennis titan Serena Williams.

Before celebrating the launch of his new cologne at LIV Friday, rapper 50 Cent was feted at a dinner party at Scarpetta in the Fontainebleau.

It's funny how things change. We recall how, back in the day, c. 2003, riding high on his hit In Da Club, Fiddy (do people still call him that?) had to sign waivers whenever he went into certain swanky SoBe hotels because he was considered a liability with his gangsta background. On Friday, the F-bleau rolled out the red carpet for him, and the only request the rapper-turned-perfumer had was that everyone at his dinner drink his favorite cocktail of Belvedere shaken with -- what else? -- his very own Formula 50 Vitamin Water.

Congrats to The Miami Herald's own Manny Hernandez, whose celebrity photo exhibit, THIS IS IT!, debuts on Thursday at The Palms Hotel and Spa. Hernandez, whose photos also run in The Herald, will donate all proceeds from his exhibit, which runs through Dec. 6, to the Diabetes Research Institute.

Finally, Wilhelmina Models, Shape and Men's Fitness are holding an open casting call for the Wilhelmina Hot Body Model Search at the new South Beach Vitamin Shoppe (1101 Fifth St.) 10 a.m.-3 p.m. Saturday. They're looking for healthy and fit men and women 18 and older to win the chance for a five-year Wilhelmina contract and be featured in two sponsor magazines. More information: wilhelminamodelsearch.com.