Beyonce stepped out for the first time last night since giving birth to daughter Blue Ivy Carter--and she looks amazing (not that there was ever a doubt)!

The 30-year-old superstar showed off her smokin' hot post-baby body in a figure-hugging red Alice Temperly dress as she supported her husband Jay-Z at the first of his two benefit concerts at Carnegie Hall.

We love that it has only been a month since Bey gave birth and she's already rocking a tight jersey dress. Bravo!

The "Bootylicious" singer also wore embellished Christian Louboutin heels and a gold Alexander McQueen clutch.

And Baby Blue definitely wasn't far from her mind. Beyonce finished her look with a big blue cocktail ring and blue nail polish.

We also spotted Bey's "IV" tattoo on her wedding finger since she wasn't wearing her massive engagement ring. Hubby Jay-Z bears the same tat on his finger, which stands for the roman numeral for "4." And they love the number 4. Why?

Beyonce was born on September 4, Jay-Z was born on December 4, the two were married on April 4, Beyonce's last album was titled "4" and they even gave their baby girl the middle name Ivy. Enough said.

Proud papa Jay-Z dedicated the concert to their daughter and after singing "Glory," the song he wrote for Blue Ivy, the rapper confessed:

"I didn't think I was going to make it through that one. That was tough."

Check out the slideshow below to see all the hot-mama pics Bey posted to her website --doesn't she look fabulous?