Those jeans are Levi's 518. It's a slight bootcut jeans, low waist and quite tight. I think they aren't produced any more, but sometimes you can catch one on ebay.
He is sexxy in those levi Jeans!!! Are they 501s or 518 like you put in the title? Are the girls or guys jeans in the store? I would love to wear a pair like that too! I love getting wet in my white 501 jeans in my tub, and masturbating!!!! Levi jeans feel awesome when wet!