"Bachelor" winner Shayne Lamas is finally a mommy ... after giving birth to a bouncing baby girl today, Press Dahl Lamas-Richie ... TMZ has learned.
We're told Shayne's hubby -- TheDirty.com honcho Nik Richie -- was in the room for the planned C-section. Press was born at 12:01pm ... weighing in at a healthy 6 pounds 6 ounces.
Shayne and Press are both doing well. 11/11/11 -- She's one lucky little lady.