PHOTO: Meet Ryan Phillippe & Alexis Knapp's Baby Girl

Ryan Phillippe allegedly became father again on July 1 when his ex-girlfriend Alexis Knapp gave birth to a baby girl, Kailani Merizalde Phillippe Knapp.

Knapp, an aspiring 22-year-old actress, shared a picture of her 3-month-old chubby-cheeked bundle of joy on Twitter, gushing about her daughter's cuteness.

"I do declare you to be the prettiiiest lil girl in the whole wide world," the proud young mama twittered with a link to the photo.

Knapp's pregnancy was announced in March, but it was not confirmed whether Phillippe, 37, was the baby's father. But The Lincoln Lawyer actor erased much doubt about his paternity, when sources reported he was taking responsibility by attending doctor's appointments and being present at the baby's birth. And despite no comment from his reps, clearly little Kailani has Phillippe in her name.

Phillippe has two older children: Ava, 11, and Deacon, 7, with first wife Reese Witherspoon.

"Reese feels bad Ryan has to deal with this," a source told Us in July. "They're bonding over it because it obviously affects their kids."

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