She's Ryan Phillippe's baby mama.

After Ryan Phillippe split from wife Reese Witherspoon, he was linked to a number of celebrity women, including Abbie Cornish, Amanda Seyfried and Rihanna. But none of his relationships since Witherspoon have been as lasting as his one with Alexis Knapp, who, at 21 years old, gave birth to his third child (two with Witherspoon) last year. The couple have since split up but he remains apart of his child's life.