Heidi Klum shares photo of rarely-seen mom for Mother's Day -- and she's stunning

So that's where she gets it!

Heidi Klum is known as one of the most beautiful women in the world, and while some models get their looks from surgery and careful makeup, there's no doubt that Heidi's gorgeous face is au natural. How are we so sure? Um, because we just saw her mom!

Heidi shared a photo of her mother, Erna Klum, in honor of Mother's Day -- and she's stunning! Although she's occasionally been snapped by paparazzi, Erna is rarely in the spotlight, so the photo was a much-welcome surprise. Heidi is snuggled into her mom's shoulder, and both women are sporting perfectly-tousled blonde bangs.

It's not clear when the sweet photo was taken since Heidi is one of those people who just doesn't age, but we love it! Heidi herself is mom to four children -- two sons and two daughters -- so the family was definitely in for a hectic, love-filled Mother's Day.

Heidi is far from the only star with a gorgeous mama. Take a look at these other celebrities with beautiful, rarely-seen mothers: