Adrian Grenier Had 'Biggest Penis I'd Ever Seen,' Says Former 'Bachelor' Contestant

Adrian Grenier keeps it serious while filming scenes for his upcoming movie Entourage on Monday (June 2) in Los Angeles.

The 37-year-old actor was joined by his co-stars Kevin Connolly, Jerry Ferrara, and Kevin Dillon.

PHOTOS: Check out the latest pics of Adrian Grenier

“[Adrian] had the biggest penis I’d ever seen�”and the biggest bush!” former Bachelor contestant Courtney Robertson shared in her new book I Didn’t Come Here to Make Friends: Confessions of a Reality Show Villain, where she dishes on which celebs she has slept with in Hollywood.

15+ pictures inside of Adrian Grenier filming Entourage…