Rosie O'Donnell's daughter Chelsea gives birth to baby girl -- see the cute pics!

It's an exciting day for Rosie O'Donnell!

The comedian is now a grandmother, after she revealed via Twitter on Wednesday that her 21-year-old daughter, Chelsea, gave birth to a beautiful baby girl, Skylar Rose.

Rosie shared a pic of Chelsea cradling the newborn with her boyfriend, Jacob Bourassa, by her side.

"My daughter chels - jake - and skylar rose my first grandchild !!!" Rosie captioned it, using the hashtags "#love," "#life," and "#NANA."

She also shared an additional close-up shot of the little bundle of "joy."

"Nana & Skylar," another post read. "#bigLOVE."

Rosie -- who adopted Chelsea when she was a baby with her then-wife Kelli Carpenter-O’Donnell -- has certainly had her fair share of ups and downs with her daughter over the past few years. However, a rep told ET in June that the two had reconnected after Chelsea learned she was pregnant.

"Rosie said, yes, she’s pregnant and they reconnected," the rep stated at the time.

More celebrity babies born in 2018:


Why Rosie O'Donnell Isn't Getting Married for 'a Couple Years' (Exclusive)

Rosie O'Donnell Says Her Relationship With Estranged Daughter Chelsea Is Much Better Now

Rosie O'Donnell's Daughter Chelsea Files For Separation From Nick Alliegro