The actors rep confirmed the birth of baby Ava Berlin Renner, saying, "They are beyond thrilled. Mother and daughter are doing great."
A source revealed to the mag about Renner and Pacheco's romantic past. "They used to date but it wasn't serious. [Renner] was being ultra-secretive about it, but she has been going on about her life and not hiding it."
Pacheco has been staying in an L.A. home awaiting the arrival of their firstborn.
"Hansel & Gretel: Witch Hunters" star Jeremy Renner and his ex-girlfriend, lingerie model Sonni Pacheco, welcomed their first child Thursday, reports Us Weekly.