Heidi Klum has always been "very open with [her] body"

She told People: "A lot of people are like, 'Oh, I don't know about mom and daughter doing this together'.

"But for us? I'm proud of my daughter. She's fine with me like that."

Heidi insisted that she has a typically "European" attitude towards her own body.

The runway star - who also has Henry, 19, Johan, 18, and Lou, 15 - said: "I've always been very open with my body. When I'm suntanning in the backyard, I might not have a top on. I'm European ... my kids don't know me any other way and are probably more easygoing with their bodies because of it."

On the other hand, Heidi still considers herself to be a cautious parent in other ways.

She explained: "When they're young, you're worried they're going to jump in the pool or stick their finger in a socket.

"Then they're driving. Then it's sex, drugs and rock and roll. You hope the seed you planted in them grows. That they're good people. That they're healthy. But you always worry. And I know I'll still be worrying when I'm 80."

Meanwhile, Heidi recently suggested that society has become "more welcoming of wrinkles".

The model observed that it's now "okay to be older".

Heidi told People: "I feel like we're more welcoming of wrinkles and rolls on our body. Being accepted at every age is amazing. That we've changed and come all that way."

Heidi doesn't have any fears of "age-shaming or body-shaming".

She shared: "For me to be older, it doesn't matter. I don't have this age-shaming or body-shaming thing. I feel like everyone should do what they want to do. I like to run around sexy - even now at 52."

Heidi actually loves posting sexy photos of herself on social media.

She said: "I've been photographing nude or in lingerie since 1992, way before Instagram.

"So for me, it's nothing new. For the past 15 years, other people are now doing what I've been doing for 30 years. Instead of being in my little bottoms in a magazine, I'm on Instagram. It's the same thing."