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Not sure what's hotter ... the weather in Rio de Janeiro or Miley Cyrus in this tiny white dress? Our vote is for Miley!

After soaking in the sun with mom Tish, the 18-year-old pop star showed off her gorgeous tan and long legs. Cute brown booties!

Thursday, Miley did some sightseeing at the famous Christ the Redeemer statue in Rio. Looks like she's got quite an entourage of friends with her!

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Miley is in Brazil to kick off the Latin American portion of her Gypsy Heart tour. After wrapping up in Rio, Ms. Cyrus will be taking off for Costa Rica. She's livin' the life!