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At long last, meet Kailani Merizalde Phillippe Knapp!

On Monday, "So Undercover" actress Alexis Knapp, 21, shared an adorable photo of her 3-month-old daughter with ex-boyfriend Ryan Phillippe, 37. "I do declare you to be the prettiest lil girl in the whole wide world," Knapp wrote.

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Knapp announced her pregnancy at an industry event in mid-February -- five months after she and the "Lincoln Lawyer" actor officially ended their on-and-off relationship. (Phillippe was dating Amanda Seyfried at the time. They have since split.)

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Though Phillippe has not confirmed his paternity -- as of July 25, a source told Us Weekly he had not taken a DNA test -- he's found support from his ex-wife Reese Witherspoon, 35, with whom he has two children: Ava, 11, and Deacon, 7.

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"Reese feels bad Ryan has to deal with this," an insider told Us at the time. "They're bonding over it because it obviously affects their kids."


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