Celebrity Parents Lance Armstrong Becomes a Father Again Little Max Armstrong announces his own birth on dad's Twitter page with a "Wassup, world?" By Mike Fleeman Published on June 5, 2009 01:50 AM Share Tweet Pin Email Photo: Kevin Winter/Getty Time to get a child seat for that racing bike. Lance Armstrong and girlfriend Anna Hansen welcomed a 7 lb., 5 oz, 20-inch-long baby boy named Max, the pro cyclist announced on his Twitter page Thursday night – or, rather, the little guy announced it himself. “Wassup, world? My name is Max Armstrong and I just arrived. My Mommy is healthy and so am I!” says the post, which includes a photo of the baby in a cap and sticking his tongue out. In another post, Armstrong includes a photo of the nurse and doctor who helped deliver Max. “They were amazing!!” writes Armstrong. The seven-time Tour de France winner and cancer survivor, who is making a comeback to pro cycling, announced last December that he and Hansen were expecting their first child together. He has three children with ex-wife Kristin. The children were conceived through in vitro fertilization with sperm frozen prior to Armstrong undergoing chemotherapy for testicular cancer. RELATED ARTICLE:• 1999: Lance wins Tour de France!RELATED GALLERY:• PEOPLE Covers: Celeb babies make their debut!from Huffington PostPHOTOS: Obama Wears Same Tie To Meet Different World LeadersWATCH: Jessica Biel Talks Timberlake Kiss Attacks, Phone Calls