Seven-time Tour de France winner Lance Armstrong welcomed the birth of his fifth child Monday, announcing the joyous occasion via Twitter.

“Olivia Marie Armstrong has arrived!” Armstrong tweeted at approximately 2:00am ET.

This is the professional cycling legend’s second child with girlfriend Anna Hansen. Armstrong has three other children with ex-wife Kristin Richard, including a son and twin daughters.

Armstrong set up a Twitter account for his latest offspring in April under the moniker, Cincoarmstrong.

On Sunday, a tweet from the yet-to-be-born daughter read, “I’m ‘bout read to get outta here!”

Olivia became Armstrong’s second naturally-conceived child after undergoing chemotherapy and surgery for testicular cancer in 1996. His other children were conceived using sperm Armstrong banked prior to receiving his treatments.