Summer is finally in full swing with the longest and hottest days of the year, and Nina Dobrev is wasting no time. The Vampire Diaries star has been hitting the beach, taking epic vacations, flaunting her bikini body, and documenting every step along the way on her popular Instagram account. Nina also recently shared pics from what looked like a glamorous birthday party for Julianne Hough! We wish there was a "love" button, because we've been living vicariously through every post! Click through the gallery to see some of Nina's most summery Instagram pictures so far this year.