Jimmy Kimmel and Wife Welcome Baby Girl

PHOTO: Jimmy Kimmel and Molly McNearney attend SiriusXMs "Howard Stern Birthday Bash" at Hammerstein Ballroom, Jan. 31, 2014 in New York City.PlayRob Kim/Getty Images
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Jimmy Kimmel and wife Molly McNearney had their baby girl Thursday morning.

"Congratulations to my beautiful and very tough wife @mollymcnearney on delivering our baby girl this morning," the late night host tweeted today.

The couple named their first child together Jane, his rep tells ABC News.

Read: Jimmy Kimmel Expecting a Baby With Wife Molly McNearney

Kimmel, 46, also tweeted a joke, saying "Thanks for all your kind baby wishes - turns out, not ALL tweets are mean!"

His wife, whom he married last July, also showed she has a sense of humor.

"Kids, don't do drugs. Until you have a baby. Then do ALL OF THEM," she posted.

Kimmel has two other children from a previous relationship - son Kevin, 20, and daughter, 22.

He joked earlier this year with Ellen DeGeneres about starting over raising a child.

"I have a 20-year-old son and a 22-year-old daughter and I've forgotten everything ... I told my daughter there's only so much love I have to give and you're going to have to split it up with the new kid," he said. "I'm going to be one of those old dads."