They are the most low-profile lovebirds in Hollywood but something about being in Paris got the better of Rachel Bilson and Hayden Christensen.
The engaged couple actually held hands, walked arm-in-arm, took pictures of each other and smiled for photographers!
The startling PDA occurred at Roland Garros stadium in Paris when the pair attended several Paris Open matches.
Christensen is an “ambassador” for Lacoste sportswear. LaCoste Challenge fragrance is a tournament sponsor.
(Photo: Splash News)