Baby weight? What baby weight?

Beyonce gave birth to daughter Blue Ivy on Jan. 7, but the curvy singer is already back in extra-fine, pre-Blue form. She has shed the excess pounds that come with carrying a life in your womb in less than four months.

The singer appeared in a classy and curve-hugging, knee-length blue dress, designed by former Spice Girl and mom-of-four Victoria Beckham, who knows a thing or two about dressing a post-baby body. It’s not lost on us that Bey wore a cobalt blue dress when showing of her toned and trim body while at the Greenwich Hotel in New York City.

With her hair pulled back in a tight ponytail and several strands of statement necklaces, Bey was ever the fashionable stunner. Love those strappy blue shoes.

According to The Boombox, the Queen B was hitting up a fundraising dinner hosted by First Lady Michelle Obama and actor Robert DeNiro. Bey noshed with mom Tina and mother-in-law Gloria Carter. So it was Bey having a bite with Blue’s grandmothers.

Bey worked quickly to shed her baby weight, especially since she is returning to the stage this Memorial Weekend for the first time since having her Baby Blue. Best to start getting in shape now, since she is already mounting a return to work.