Karlie Kloss has simplified her beauty and fitness routines since becoming a mom.

The 31-year-old model - who has sons Levi, two, and Elijah, 4 months, with husband Joshua Kushner - has had to minimise everything to fit it in with her hectic family life.

She told People: "It's not a 45-minute beauty routine anymore. I don't have time for that. It's like, what are the small things with two minutes, four minutes that I can do?"

Of her exercise regime, she said: "My philosophy has gotten to be much more about strength.

So I do light weights and body weight exercises. I do so many at-home workouts now."

Karlie no longer has a restrictive diet and instead focuses on fuelling her body with the right nutrients to give her energy.

She added: "It's this funny thing.

"It's like, until you experience it you don't understand how much it really does change your life, and it changed my own relationship with my body. I think now I do what I can to just rest, recover, and eat what's going to fuel my body.

"There's so much more intention to what's restorative, as opposed to any type of extreme restriction."

Karlie previously admitted she likes to opt for natural make-up because she's been a "blank canvas" for artists to create bold looks for many years.

She told The Wall Street Journal newspaper: "It’s more on the simple side. I guess it’s because, my 15 years working as a model, I’ve always been the blank canvas for the artists to create these looks. I’ve always been so much more focused on taking care of myself from the inside out. At night, my routine is cleansing, toning, using a serum and then a cream and an under-the-eye cream.

"In the morning ... I slap on a serum and a light cream. I [like] a light concealer, I like to fill in the brow with an eyebrow pencil. Maybe a little bit of cream blush and a lip liner and then that’s it."