After 12 years in the biz, Britney Spears is no stranger to costume changes.

The "Womanizer" singer, 28, began her romantic Hawaiian getaway with beau Jason Trawick by wearing a studded yellow bikini August 24.

The next day, Spears showed off her toned tummy in a turquoise two-piece, followed by a hot pink bikini Thursday. The singer -- who recently filmed a cameo on Glee -- capped off her week of fun in the sun with a striped suit on September 3.

Tell Us: Which sexy two-piece did Britney Spears rock best?

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16,198 Votes
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1,637 Votes
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498 Votes
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2,347 Votes

Watercooler Poll

Which skimpy bikini did Britney Spears rock best?

Striped
Turquoise
Pink
Yellow