Beyonce debuts her post-baby body at Jay-Z charity concert Beyonce is back in her high heels -- and back in fighting shape -- nearly one month after giving birth to daughter Blue Ivy Carter. Attending a charity concert put on by her husband, Jay-Z, Bey rolled up to Carnegie Hall flaunting serious curves in a coral dress on Monday. With her own mama Tina Knowles at her side, the star mingled with benefactors and fans alike. Benefiting the United Way of New York City and the Shawn Carter Scholarship Foundation, Jay performed a full set list with the help of a 40-piece orchestra. He belted hits like "99 Problems" and the endearing track "Glory" -- dedicated to little Blue. After "Glory," Jay admitted to the crowd he was unsure he'd make it through the song without falling apart over he and B's new addition. Blue joined the household on Jan. 7, delivered in Manhattan, sparking a Twitter frenzy and inspiring awe from folks, including family friend Gwyneth Paltrow. Additional concert guests included Liza Minnelli and Brooklyn Decker, who caught Jay and special guests Alicia Keys and Nas. What do you think of Beyonce's post-baby body? Tell us in comments. Beyonce has a baby girl! She and Jay-Z welcome Blue Ivy Carter Beyonce's baby Blue Ivy Carter gets a song from her daddy Jay-Z Beyonce throws a 'Party' with sister Solange, Kelly Rowland [Video] Photo: Beyonce's rocking bod only one month after having baby Blue. Credit: WireImage