JAY Z Performance to Benefit United Way NYC and the Shawn Carter Scholarship Foundation

Where: Carnegie Hall and after party at 40/40

Who was there: Guests included Jay-Z, Tina Knowles, Nas, Beyonce Knowles, Liza Minnelli, Alicia Keys, and Brooklyn Decker.

Other details: Beyonce made her first public appearance since having a baby at the private after party for her husbands benefit concert. She showed off her post-pregnancy body in a red Alice Temperly dress and Christian Louboutin heels.

Stanley Stuyvesant (@guestofaguest) tweeted:

Beyonce in a hot red dress next to jayz and naz in VIP area eating some wings at 40/40. Five feet away from them and their bouncer

Beyonce said hi to us earlier.. She has such a great post baby bod. #40/40 for jayz benefit

[Jay-Z, Beyonce]

[Jay-Z via]

[Jay-Z via Kevin Mazur/WireImage]

[Nas, Jay-Z, Alicia Keys, Nas via]

[Beyonce via]