IN STYLE: While the biggest fashion event of the weekend, if not the year, is Glamorama, we're also excited about the fashionable fete happening at Peggy Notebaert Nature Museum Friday night. Look out for cutting-edge ensembles on the runway from noted Spanish designer Custo-Barcelona, plus live music, an open bar, and delicious bites from Angelina Ristorante and Sapori Trattoria. It all goes down from 6-10 p.m. with limos whisking guests to the after-party at Crescendo until 4 a.m. (open bar until 11:30pm). Get tickets here. $40-$55.
If you want to keep the stylish theme going, hit Double A. The red-hot, lower-level lounge of River North's Mercadito packs in a beautiful crowd every weekend, particularly on Fridays when Genuine Entertainment hosts a late-night dinner party upstairs. Don't be surprised if you spot a celeb or two downstairs indulging in cocktails with names like Caipisutra (Leblon cachaca, pineapple, grapefruit, garam masala) and Cheeky Chicky Boom Boom (Absolut 100, St. Germain, strawberries, lemon, vanilla sugar).
PARTY WITH THE PEAS: If you don't have tickets to the Black Eyed Peas concert Friday night, you can still get your boom-boom-boom on. The crew will hit Enclave after the show, their usual Chicago late-night landing spot, and will.I.am will also make his way over to Sound-Bar for an exclusive DJ set.
MATERIAL GIRL PARTY: Kit Kat Lounge and Supper Club celebrates Madonna's birthday all day Sunday with impersonator Diva "Madame X" entertaining guests during brunch. Later that evening, Kit Kat's Diva "Kathryn Cole" will continue the Madonna marathon by performing as Madonna through-the-decades with a variety of costume and music selections beginning at 7:30 p.m. Sample the "Like a Virgin" martini for only $5, or any other martinis on the menu for half-price.