Lance Armstrong's girlfriend, Anna Hansen, gave birth to a baby boy named Max, on Thursday, June 4.
Armstrong announced the news through a posting on his Twitter account at approximately 11:15pm (EDT). "Wassup, world? My name is Max Armstrong and I just arrived. My Mommy is healthy and so am I!" the post read.
Armstrong also posted a picture of the newborn and announced that Max weighed seven pounds,five ounces and was 20 inches long.
Max Armstrong becomes the first child for the couple and the fourth for the seven-time Tour de France champion who has three children with ex-wife, Kristin.