Julianne Hough & Nina Dobrev — The Bikini 3-Way On the Beach

0428_julianne_hough_PCNNewly single Julianne Hough and her “Vampire Diaries” star BFF Nina Dobrev like to french … braid their hair on the beach.

In a scene straight out of a porn film —  minus all the nudity and sex — the orange bikini babes engaged in an innocent three-way hair braiding session with a third adult female friend while bronzing their supple flesh on a public Miami beach.

This isn”t how one usually gets twisted in South Beach.