The 27-year-old actress kept her left hand covered up with her sweatshirt as they strolled down the street.
According to Us Weekly, Leighton and Adam packed on the PDA while on a trip earlier in the month to Capetown, South Africa.
In case you missed the news, Leighton is set to make her Broadway debut in the new production of the play Of Mice and Men!
10+ pictures inside of Adam Brody and Leighton Meester walking their dogs… More Here! »