Jessica Simpson Gives Birth to Baby Girl Maxwell Drew Johnson!

Jessica Simpson is finally a mom!

After what seemed like the longest pregnancy ever, Jessica gave birth today to a baby girl named Maxwell Drew Johnson, a rep for Jessica confirms to OK!.

OK! NEWS: JESSICA SIMPSON IS SICK OF PREGNANCY: "I'M READY TO HAVE MY BODY BACK"

The singer and her fiancé Eric Johnson announced the news on Jessica's website: "Eric and I are elated to announce the birth of our baby girl, Maxwell Drew Johnson. We are grateful for all the love, support and prayers we have received. This has been the greatest experience of our lives!!"

Baby Maxwell (whom they will call Maxi) was born at 9 lbs., 13 oz. and 21¾ inches long.

Jessica announced her pregnancy on Halloween by Tweeting a photo of herself dressed as a Mummy!: "It's true — I'm going to be a mummy!"

OK! GALLERY: JESSICA SIMPSON & ERIC JOHNSON GET CAUGHT IN A "BABY SHOWER" IN L.A.

The Fashion Star judge then posed for the cover of Elle in March, revealing the happy news that she was expected a baby girl. This will be one fashionable little baby!

Jessica and Eric got engaged in November 2010 after just six months of dating.

Now little Maxi can be in their wedding! Congrats to Jessica and Eric!

For more on Jessica's big arrival, check out this video from SheKnows.com: