Beyonce Flaunts Amazing Figure in Low-Cut Black Swimsuit

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Even after having a baby, Beyonce Knowles is still bootylicious!

The singer, 30, showed off her post-pregnancy curves in a low-cut black swimsuit in St. Barts Monday; Knowles and her hubby Jay-Z, 42, are currently on vacation with their 3-month-old daughter, Blue Ivy.

Knowles and her husband managed to find some alone time during their Caribbean getaway, as they were photographed tanning on the beach and riding wave runners. (Blue Ivy was being cared for by a nanny.)

It's the first vacation for their baby girl, who was born in New York City's Lenox Hill Hospital on January 7. Knowles, who recently celebrated her fourth wedding anniversary with Jay-Z (real name: Shawn Carter), is scheduled to perform three times over Memorial Day weekend at Revel Beach's Ovation Hall in Atlantic City, New Jersey.

For now, Knowles -- a 16-time Grammy Award winner -- is relishing her time off. "She just is so happy. I've seen Bey like 3 times since she's had the baby," singer and friend Melanie Fiona recently told Us Weekly. "She's just glowing and she's saying [motherhood] is the best, and she just loves it!"