Updated at 8:41 p.m. ET
Mei Xiang, the 22-year-old panda at the Smithsonian's National Zoo, has given birth to a cub.
"A precious giant panda cub has arrived!" officials announced Friday, adding that they are "overjoyed."
The latest addition to the zoo was born at 6:35 p.m. ET, and zoo officials said that Mama Panda "is caring for her newborn attentively."
"Positive mothering behaviors include nursing her cub and cuddling it close."