SEXY: Beyoncé shows off her post-baby curves as she hits the beach in St Barts with Jay-Z

She gave birth to daughter Blue Ivy just three months ago, but Beyoncé has wasted no time in showing off her post-baby curves.

As she hit the beach in St Barts with husband Jay-Z, the 30-year-old star proudly displayed her womanly curves in a modest one-piece.

Beyoncé looked stunning in the plunging black swimsuit, which featured a cute frill around the waist, as she cooled off after some sunbathing with a dip in the sea.