E! has narrowed it down to a king and queen of summer bodies and Zac Efron and Britney Spears have dominated their respective sexes when it comes to our Best of Summer: Hottest Bods tournament.Efron's abs and arms beat out hunks like Joe Manganiello, Chris Pratt and Jamie Dornan, while Spears topped bikini bods like Kim Kardashian, Kate Upton and Beyoncé.