Kaia Gerber and Austin Butler get some fresh air during a hike in Los Angeles on Monday (March 7).

The 20-year-old model and the 30-year-old Once Upon a Time in Hollywood actor were seen holding hands as they took Kaia‘s dog Milo on a walk.

PHOTOS: Check out the latest pics of Kaia Gerber

For their outing, Kaia wore a fuzzy blue fleece and black leggings. Austin stepped out in a vintage style t-shirt, sweatpants and a black baseball cap.

The couple were last spotted together over the weekend, when they were photographed on their way to a lunch date in Los Feliz. Before that, they were seen during a day out in London.

FYI: Kaia is wearing Gymshark leggings. Austin wears Persol sunglasses.

Click through the gallery for the latest photos of Kaia Gerber and Austin Butler…