Behati Prinsloo flaunts her bikini body on the beaches of St. Barts on Nov. 20. Credit: Splash News

The temperatures are dropping and holiday decorations are going up, but Victoria's Secret model Behati Prinsloo appears to be prepping for summertime. Find out how she prepped for the 2013 Victoria's Secret Fashion Show.

The 24-year-old Namibian bombshell was spotted on the beaches of St. Barts in several tiny bikinis, posing by the surf in a sexy photoshoot with Romanian model Andreea Diaconu

The ladies were shooting a campaign for the lingerie brand's swimsuit line, and looked sun kissed and ready to jump in the surf. 

Adam Levine's fiancee seemed confident throughout the shoot, flaunting her toned abs in the sun. 

Though they've both had lots of travel and conflicting schedules with The Voice and Victoria's Secret, Levine and Prinsloo seem to be making time for one another. The Maroon 5 rocker attended the legendary Fashion Show -- where he once serenaded ex-girlfriend Anne V -- and led a standing ovation for his bride-to-be. 

Prinsloo attended several tour stops for Maroon 5 on their summer amphitheater tour in August. The couple got engaged in mid-July, just weeks after Levine was spotted with Danish swimsuit model Nina Agdal. The Grammy winner split with Agdal weeks before reuniting with Prinsloo and popping the question in a surprise proposal, and later told Agdal of the news via text.