"Glee" star Darren Criss [1] sings his own version of Madonna's [2] "Dress You Up" in a new promo for Fashion's Night Out, reminding us that the event is just two weeks (and a day) away!

The promo for FNO, a major shopping event is marked by stores staying open late with discounts and limited edition collections, also featured Taylor Swift [3], Justin Bieber [4], Usher [5], the Spice Girls' [6] Victoria Beckham, and more.

All the stars in the promo sport official 2012 FNO T-shirts, which will be sold to benefit the New York City AIDS fund. Bieber keeps it cool by pairing the charity T with a studded moto vest, jeans and Air Jordans, while T-Swift adds a bit of glam to the shirt with a pair of metallic running shorts. Criss accents the shirt with a black blazer, tight black jeans and studded loafers, while Usher rocks a sleek vest and printed pants.

Fashion's Night Out happens across the world on Sept. 6. Will you be joining in on the fourth annual night of fun?

Watch the full promo above and a second Swift-Bieber ad below: