Kourtney Kardashian goes naked for 39th birthday

Now that’s a birthday suit!

Kourtney Kardashian kicked off her 39th birthday festivities by coming out with a steamy nude photoshoot in V Magazine.

The health-conscious mom of three, who celebrated her 39th year of life with a party on Thursday night, used the shoot to promote her makeup collaboration with 20-year-old sister Kylie Jenner by wearing nothing but a neon pink trench coat and KOURT x KYLIE cosmetics.

“My sisters and I are known for the way we use makeup and our different looks, so it makes total sense to all of us when our style begins to evolve to the next thing,” the eldest Kardashian sister told V Magazine. “What I tend to prefer in my everyday style feels more natural and understated, but I love when I have the opportunity to play with makeup and have fun with it.”

The makeup line drops on April 24.