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.

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