49-year-old model Heidi Klum finally reveals her SHOCKING secret to maintaining her youthful aura, and it's something you probably wouldn't expect.

In an interview with E!'s Daily Pop, the "Project Runway" host credited her beauty secret to be her husband, Tom Kaulitz-specifically, his blood.

"I suck his young blood, is what I'm doing," the 49-year-old star joked. "Like a vampire."

Musician Tom Kaulitz, 32 years old, and model Heidi Klum, 39 years old, have been married for 3 years.

While we sincerely hope that the youthful model is joking, Klum added that her real beauty secret is to never forget to wear sunscreen. Additionally, her next secret to staying young is to "enjoy every moment in her adventurous relationship with the musician."

"I feel like we're never gonna be as young as we are right now, so we might as well live right now," Klum explained. "I love to live right now, and for me, that is sun and having fun and, you know, just wear sunscreen."

READ ALSO: Battle of the Exes: FKA Twigs and Margaret Qualley Fight Over Shia Labeouf Abuse Case

A Glimpse at Their Youthful Marriage

Speaking of love and having fun, it looks like the television host has finally found her one true love with musician Tom Klauritz as they recently celebrate their third anniversary. "It flew by, but it feels like a lifetime already," Heidi remarked.

"I just know him so well. We just gel really well," Heidi tells E! News. "I just feel like, 'Finally, I found the one.' So far so good. I hope it stays that way."

The "America's Got Talent" judge certainly has been enjoying life with her rockstar husband, as seen on her Instagram.

A post shared by instagram

 

Heidi also tells US Weekly how Tom is "amazing" with her kids, and has warmly welcomed him into the family.

"I'm sure it's not easy to step into an immediate family, having all of a sudden four kids and teenagers." Klum commented. "They were easier when they were younger, for sure. Every age comes with its challenges."

The model currently has 4 kids from her ex-husband Seal: Leni, Henry, Jonah, and Lou.

Heidi and Tom secretly tied the knot in February 2019, with the musician being her third husband. The model had been formerly married to her hair stylist Ric Pipino in 1997, then musician Seal in 2005.

READ ALSO: Wendy Williams Scared Fans With Recent Looks? Host Reportedly Becomes 'Different'