Katy Perry and John Mayer took a leisurely hike in the Hollywood Hills on Wednesday with their friends.
Pop singer Katy was seen wearing comfortable training clothes for the hike, including white tank top, leggings and a grey sweater tied around her waist with a blue baseball cap and Ray-Ban sunglasses.
It seems the star is enjoying her outdoor exercise - the previous day she joined her boyfriend John Mayer, Girls star Allison Williams, and College Humor co-founder Ricky Van Veen for another outdoor expedition. They all have spent a great time together.
