The Russian beauty, who briefly dated Maroon 5 frontman Adam Levine, and her business executive boyfriend Adam Cahan welcomed baby Alaska on Thursday (25Jun15), but didn't reveal the happy news until Wednesday (01Jun15).

Vyalitsyna took to to post a photo of her baby's tiny foot cradled by the new parents' hands, and added the caption, "Welcome to the world baby Alaska! Your little feet absolutely rocked my world, I've never been so in love! @acahan and I couldn't be more proud."

The new parents haven't confirmed the sex of the baby, but in another snap, the model is featured pushing a baby stroller with a pink and white blanket covering the newborn, and at her recent baby shower, pink balloons were part of the decor, suggesting the bundle of joy is a girl.