Nina Dobrev‘s got a sunny disposition … which perfectly matched her surroundings when she hit the beach in a tiny bikini.

The actress celebrated Thanksgiving with some pals in Malibu … stepping out in a black and white two-piece which provided only bare minimum coverage.

Nina carried a coffee with her … and, she slung a huge beach umbrella over her shoulder — grinning wildly and surely getting some chuckles out of her companions.

It’s a low-key holiday for Nina, who has experienced a ton of changes in her personal life over the last few months … including splitting from her longtime fiancé, snowboarder Shaun White.

PEOPLE cited anonymous sources who said the split was a mutual decision that was “made with love and a deep respect for one another.”

She’s been spotted with Zac Efron since the split … leading some to believe the two might be dating — but, she told us the two are just pals, full stop.