Lesley Abravanel

Justin Bieber turns 21; Dustin Johnson celebrates golf win

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Justin Bieber had lunch with a “female friend” — described by our spies as “younger, looked almost identical to Willow Smith but had tattoos on her face” — Friday at Prime Italian where he took advantage of just turning 21 by washing down a plate of penne alla vodka with a boozy berry lemonade. Later he had dinner at Red, the Steakhouse. The finally legal pop star who is slated to appear in a mediation office in Fort Lauderdale later this month to duke it out against a photog allegedly assaulted by the Biebs's bodyguard, supped on steak, lobster tail and king crab while a large group of females camped out back waiting to catch a glimpse.

Mae Whitman, of Parenthood and The Duff fame, joined thousands of women Saturday at the Mondrian to celebrate Aerie SWIM and the #AerieREAL message by taking the world's largest unretouched selfie shot via helicopter by photog Gray Malin. The #AerieReal movement is said to challenge "supermodel standards . . . . spark[ing a] conversation with consumers about the true meaning of beauty, because we believe the real you is sexy. No supermodels. No retouching.​

Marc Anthony, dressed in jeans and a fitted white shirt, was spotted dining on the riverfront terrace with third wife Shannon De Lima and friends on Friday at Zuma.

Model/honorary Kardashian family member Brittny Gastineau looked, says our spy, “very Jessica Rabbit” Saturday in a long-sleeved Michael Costello gown at the Women of Tomorrow Mentor & Scholarship Program black-tie gala at the Mandarin Oriental, Miami. The daughter of former NY Jets player Mark Gastineau announced she is relocating to Miami soon. It’s been rumored she has had a volatile romance with Grammy-winning superstar Luis Miguel, but he was nowhere to be found. Instead, she arrived with E!'s Filthy Rich: Cattle Drive alum Fabian Basabe and took countless selfies throughout the night.

Actress Paz Vega had a late dinner with nine friends Saturday at Katsuya.

Bill and Hillary Clinton, in town for the Clinton Global Initiative at the University of Miami, had dinner Saturday with a large group at La Mar by Gaston Acurio.

As Dustin Johnson finished up his last shot to win the World Golf Championships-Cadillac Championship Sunday, his wife Paulina Gretzky and newborn baby were waiting behind 18th green watching his big win on a TV screen nearby. As Johnson walked up to sign his winning score card, he saw Gretzky and his son and immediately started beaming, saying, “Now that’s what I wanted to see,” and hugged and kissed both.

Model Nina Agdal and broker boyfriend Reid Heidenry were spotted Sunday, checking out new event space, The Little Farm House (formerly known as The Magic City Farm), which was recently purchased and completely renovated by Gabriella von Rosen.