PIC: Pregnant Kourtney Kardashian Lightens Her Hair

Credit: Visual USA; X17online.com

Kourtney Kardashian has followed in the footsteps of her younger sister Kim Kardashian by lightening up her locks, which she debuted in Hollywood on Wednesday.

The pregnant Kourtney and Kim Take New York star, who is known for her dark, practically black hair, sported a fresh glossy brown color that appeared shades lighter with several light brown highlights dispersed throughout.

Kardashian, 31, is expecting baby number 2 -- a girl -- with her boyfriend Scott Disick in late spring/early summer. She confirmed her news to Us Weekly in November.

"It wasn't like we weren't trying," Disick, 28, had told Us. "We kind of just said, 'If it's meant to be, it'll be.'"

The couple is already mom and dad to their son, Mason Dash Disick, 2.