The "Underworld" star shared some slightly awkward intel about both her mother and daughter, Lily Mo Sheen, during her appearance. First up was mum, who got the spotlight after Kimmel asked whether Beckinsale had ever heard of Reddit before.
"I know Reddit is the one where sometimes you can find pictures of porn stars with your own face on it, isn't it?" she asked. "I've been sent a few, quite distressing photos of myself very busy actually. Not just in a wicker chair naked, but involved with more than one person. So when I got sent it, I just immediately sent it to my mother with no explanation."