Kaia Gerber and Austin Butler continue on with their romance. This week, the couple was spotted walking and going for a hike on Los Angeles. The two were joined by Butler’s dog, who looked happy to be out in nature.Cindy Crawford poses with Kaia Gerber, Naomi Campbell, Serena Williams, and more in ParisKaia Gerber spends Valentine’s Day with Austin Butler in London [PHOTOS]Kaia and Austin looked sporty, wearing comfortable clothes for their walk.