Jennifer Garner keeps ''sexy Polaroid'' photos of herself and husband Ben Affleck in their home.

The 42-year-old actress has admitted to keeping a hard copy of X-rated pictures that she has taken with her 'Daredevil' actor husband.

In an interview with Vanity Fair magazine, Jennifer confessed: ''Polaroids! That's what we do at the Affleck house. We have a stack of sexy Polaroids.''

The 'Dallas Buyers Club' star - who has three children with Ben, Violet, eight, Seraphina, five, and two-year-old Samuel - also admitted she is concerned by the worrying trend of teenagers using social media to send explicit photos to one another.

Talking at the Toronto International Film Festival to promote her new film, 'Men, Women And Children' which is based on technology at its effect on relationships, Jennifer shared: ''It makes you feel kind of sick to your stomach because ... with parenting ... you're just trying to get it right,

''In LA we have all these parenting classes and in one, a teacher said to me, 'Prepare your child for the road, not the road for your child.'

''So we have pulled stuff up before and said, 'Look, this is how crazy this stuff is guys, look at this.' ''

Jennifer has previously expressed her desire to limit her children's access to the internet.

She told 'Entertainment Tonight Canada': ''They don't need it. Until I really feel the need, but that's where I'm strict.

''I know I'm a long way from feeling like that's something we need in our lives.''

Jennifer's sexy Polaroid revelation comes shortly after stars including fellow actress Jennifer Lawrence and model Kate Upton had several saucy pictures leaked onto the internet.

The photographs were allegedly stolen from Apple's iCloud service.