Good genes certainly run in this family.
Ryan Phillippe, 42, seems to have barely aged since the '90s -- much to the chagrin of his 17-year-old daughter, Ava. The actor appeared on The Late, Late Show With James Corden on Wednesday, admitting that Ava gets "embarrassed" by his youthful looks.
"I get mistaken for her brother at times, which repulses her," he said. "It absolutely repulses her that anyone could mistake me for being her brother."
WATCH: Ryan Phillippe Shows Off His Insane Non-Dad Bod -- Wet Chiseled Abs and All!
Phillippe became a dad for the first time on the day before his 25th birthday, welcoming daughter Ava with his then-wife, Reese Witherspoon. The former couple also shares a son, 13-year-old Deacon.
The actor went on to father a third child, daughter Kailani Merizalde, with Pitch Perfect actress Alexis Knapp in 2011.
In Phillippe's interview on Wednesday, he opened up about how he was prepared for parenthood early in life: His mom ran a day care out of the family's home!
"It made me ready to be a young father because I grew up raising kids," he said. "I grew up working in the day care. I would teach the kids to swim, I would do magic shows for them."
When it comes to hot Hollywood dads, Phillippe is certainly in good company! To celebrate Father's Day back in June, ET rounded up the hunkiest celeb dads for your viewing pleasure. Enjoy, below!
WATCH: Hollywood's Sexiest Dads, Including Channing Tatum, Chris Hemsworth and More!