Instagram / @nina

Nina Dobrev is showing she's doing just fine in the wake of her split with Shaun White ... flaunting a toned bikini bod that had all her fans drooling.

The "Vampire Diaries" star unloaded 18 photos on her Instagram page on Tuesday to show off the "last few highlights of summer now that it’s fall" -- and one of the snaps had her followers talking. Getty

The eighth slide of the carousel featured her with a cup of coffee, leaning up against a post in a sexy, colorful bikini.

Her supporters raced to the comment section to heap praise on her -- with one writing, "We’re all here for THE NINA ERA!!! keep smiling beautiful, it’s contagious."

Dobrev, as you know, broke up with White sometime in late August/early September after five years of dating -- and it'

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