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She may be sporting a growing baby bump, but that's not stopping Uma Thurman from taking a dive into the ocean!

The 41-year-old Kill Bill actress has been vacationing in St. Barth since last week, and yesterday she was snapped taking a refreshing dip off of beau Arpad Busson's private yacht. Thurman and Busson revealed last month that they're expecting their first child together, and she already has two kids from her marriage to Ethan Hawke, Maya and Levon.