“Eric and I are elated to announce the birth of our baby girl, Maxwell Drew Johnson,” the singer wrote. “We are grateful for all the love, support and prayers we have received. This has been the greatest experience of our lives!!”
As PEOPLE reports, the newborn weighed in at 9 lbs. 13 oz. and is 21¾ inches long. Maxwell is Johnson’s middle name, while Drew is Simpson’s mother Tina’s maiden name. “Mother and baby are doing just fine,” the source told reporters.
Simpson, 31, and Johnson, 32, got engaged in November 2010. The two planned to hold off on making it official until after their baby’s arrival.
Rushing down the aisle isn’t a priority for the star and her former NFL player beau, anyway; during a March appearance on Jimmy Kimmel’s show, Simpson revealed that Johnson “feels like my husband already.”
It is the second Simpson’s marriage, she was previously linkedto Nick Lachey from 2002 until their separation in 2005. (The duo famously documented their life together for MTV’s hit reality show, Newlyweds.)
Having split from Lachey, the Dukes of Hazzard actress dated Dallas Cowboys quarterback Tony Romo from 2007 to 2009.
In 2011, both Lachey and Romo tied the knot with their current flames; Romo’s wife, Candace Crawford, gave birth to a baby boy Hawkins on April 9, and Lachey’s spouse, Vanessa Lachey, is currently expecting the couple’s first child, writes US Magazine.
The Fashion Star mentor announced her pregnancy on Halloween, uploading a picture of herself on Twitter dressed as a mummy and cradling her belly. “It’s true – I’m going to be a mummy,” she wrote.
Following the news, Simpson and Johnson have been counting down the days ’til their little one’s arrival. In December, Simpson opened up about her excitement for “mummy”-hood.
“Eric and I love each other so much, and knowing that I love this baby inside of me is so amazing–I love it so much and I haven’t even met them yet,” Simpson confessed. “I can’t imagine how much love we’ll have for it once it finally comes!”
In March, she shared the news that a baby girl was on the way as she posed nude on the cover of ELLE. She said that time:
“Eric is so athletic — we’re gonna have this athletic girl and I won’t even be able to take her shopping, ’cause all she’s gonna want is sports bras and Nikes!”
“Though now that doesn’t even sound good, being pregnant. You crave other things. A big thing of water sounds great!”
During a March interview on Jimmy Kimmel Live, Simpson admitted of her appearance, “I feel like I have a bowling ball sitting on my hoohah. Apparently I have a lot of amniotic fluid, so whenever my water breaks, it will be like a fire hydrant!”
And speaking to Ryan Seacrest last month, the fashion designer opened up about her third-trimester sex drive. “I am definitely ‘feeling intimate,'” Simpson revealed. “I’m kind of unstoppable right now. The Big O is, like, the biggest O ever!”