True Blood hottie Alexander Skarsgard playfully washes his hair underneath a waterfall while hanging out with former O.C. actress Willa Holland.
Willa, 18, and Alexander, 30, are currently shooting their upcoming thriller Straw Dogs, a remake of Sam Peckinpah's movie that starred dustin Hoffman. Kate Bosworth and James Marsden round out the cast.
Also pictured: Alexander and Willa's co-star Drew Powell.