She may be keeping her son — and his name — under wraps, but Jennifer Meyer Maguire was all smiles as she stepped out with her newborn in a pretty sling on Sunday in Beverly Hills. Calif.

The 6-week-old baby boy is the second child for Jennifer and husband Tobey Maguire, who are also parents to daughter Ruby Sweetheart, 2 ½.

Jennifer snuggles her son in a Serena & Lily Peacock Market Sling ($129).