See a new picture of Leighton Meester hiding her ring finger while going for a walk with fiance Adam Brody in L.A. on Dec. 22. Credit: Rocstar/CPR/FAMEFLYNET

Not ready to show off her ring? Newly engaged Leighton Meester kept her ring finger covered up during an outing with fiance Adam Brody on Sunday, Dec. 22.

The 27-year-old Gossip Girl actress hid her hand in the sleeve of her gray sweatshirt while taking her dogs for a walk in L.A. with her groom-to-be. Meester paired her casual top with floral leggings, black boots and dark sunglasses. Brody wore a black winter coat, blue T-shirt, workout pants, sneakers, baseball cap and shades for the stroll.

A source confirmed to Us Weekly in November that Meester and the 34-year-old O.C. alum are engaged to be married. Since then, the notoriously private couple, who were first reported to be dating last February, have stayed quiet about their upcoming nuptials.

The Oranges and Life Partners costars were, however, photographed showing some PDA at Cape Town International Airport in South Africa earlier this month. The spouses-to-be shared a kiss while making their way through the airport on Dec. 10. During that public appearance, Meester also kept her ring finger hidden behind her shirt.