Julianne Hough has topped a list of the best summer bodies.

The 'Rock of Ages' star - who is dating 'American Idol' host Ryan Seacrest - beat off competition from stars including Gwen Stefani and Kate Hudson to take the top spot in Women's Health's magazine's third annual list of the hottest celebrity beach bodies.

According to the magazine: ''This multitalented 23-year-old hates the gym and turns to celeb fitness trainer Tracy Anderson for total-body ;dance-y' workouts. When on the road, she mixes up sessions with her trainer and P90X DVDs. After all that hard work, Julianne follows a strict diet. When dining out, her order generally looks like this: a mixed green salad with lemon (and without cheese) and salmon with mixed vegetables--no oil or salt.''

Model and actress Marissa Miller was second with 'Glee's Lea Michele in third place.

The publication said: ''Lea stays in shape by tackling the trails in picturesque Runyon Canyon--a 15-minute drive from her apartment--and working out with L.A. health consultant Devon Butler. 'We do a lot of yoga during red-carpet season,' says Butler. 'Lea has so much attention on her, and this is so calming.'''Lea especially likes Bikram, poses and breathing exercises done in a heated studio for deeper stretching and stress relief.''

TV host Brooke Burke and 'Smash' actress Katherine Mcphee rounded out the top five while Selena Gomez, Rachel Bilson, Olivia Wilde, Gwen Stefani and Kate Hudson all made it into the top 10.