It's a Girl for James Van Der Beek!

Credit: Michael Bezjian/

James Van Der Beek has welcomed a baby girl, he announced via Twitter late Monday night.

"Had the blessing of becoming a father over the weekend... Couldn't come close to describing this bliss even if I had 140 million characters," he wrote.

The girl, whom he and his wife Kimberly Brook have named Olivia, was born Saturday.

"I apologize in advance for any obnoxiously precious new-dad tweets that may follow," he wrote. "I'm under her spell..."

His biggest hope for his baby girl?

"If I watch football w/ my daughter now, she'll like the sounds of the NFL & want to watch it w/ me when she's older," he joked.

The former Dawson's Creek star, 33, wed Brook over the summer.