Tennis ace Serena Williams suffered an embarrassing double fault while on vacation in Barbados over the weekend – after her strapless swimsuit fell down!

And luckily for her friends, the hot-tempered tennis star managed to see the funny side.

Her relaxed attitude must have been a relief -- the 28-year-old isn't known for being so calm all the time.

VIDEO: Serena Williams' Shocking US Open Meltdown

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• Barbados
• Jeff Tarango
• Kim Clijesters
• Lleyton Hewitt
• serena williams
• US Open