Officials with the National Zoo confirmed their panda, Mei Xiang, has given birth to a panda cub.
The zoo tweeted the news with capital letters and exclamation points: "WE HAVE A CUB!! Born at 5:32 p.m. this evening. More details to follow."
Zoo officials report Mei immediately picked the cub up and started cradling it. Mei had been on 24-hour pregnancy watch since Aug. 7 when she began cradling her toys, licking her body and "nesting."
UPDATE: The National Zoo has tweeted a photo of the newborn cub!
A cub is born! First photo of the cub, born today at 5:32 p.m. pic.twitter.com/CcHkRGSgHe— National Zoo (@NationalZoo) August 23, 2013