By StyleWatch
February 18, 2009 07:09 PM

Dimitrios Kambouris/WireImage

Fifth Avenue just got a little bit more Posh. Giorgio Armani — with the help of some very famous friends– opened his new store on Manhattan’s Fifth Avenue last night. Victoria Beckham, Leonardo DiCaprio, Alicia Keys, John Mayer, Ricky Martin, Chace Crawford, Solange Knowles, Zoe Saldana, Molly Sims, January Jones and more braved the cold to take in Armani’s new four-level, 40,000 square-foot concept store offering every Armani brand. “It’s amazing,” Beckham gushed. “I just got here, but it looks really great.” But don’t expect to see Posh at too many more Fashion Week events. “I have to leave here tomorrow and go home.” She explains, “It’s [Cruz’s] birthday. He said, ‘It’s my birthday after Fashion Week’. I’m training him well.” DiCaprio slipped in towards the end of the cocktail party, but right on time for the private dinner Armani hosted for a handful of friends at the new Armani/Ristorante, the first of its kind in the United States. The night, however, was not just about fashion — the charity designer announced his donation of $1 million to the Fund for Public Schools to benefit N.Y.C. school children, which Caroline Kennedy was on hand to accept. Now that’s fashion that cares. Check out more Fashion Week coverage by clicking here.–Reporting by Kelly Carter