Katy Perry Woke With a Heart Full of Gratitude!

Katy Perry chats on her cell phone as she goes for a solo hike on Sunday afternoon (August 18) in Studio City, Calif.

The 28-year-old entertainer was spotted arriving at a pal’s house earlier in the week wearing the exact same shirt!

PHOTOS: Check out the latest pics of Katy Perry

“Woke up with a heart full of gratitude.” Katy tweeted earlier in the day before her hike.

In case you missed it, check out Katy‘s “Roar” 2013 MTV VMAs video promo. Katy will be performing at the big awards show this coming Sunday (August 25) on MTV!

10+ pictures inside of Katy Perry taking a hike…