Patrick Schwarzenegger's Sister Katherine Approves of His Relationship With Miley Cyrus

Miley Cyrus shows some skin in a sports bra while taking a hike with a group of pals on Thursday afternoon (April 16) in Los Angeles.

The 22-year-old entertainer’s boyfriend Patrick Schwarzenegger‘s sister Katherine recently opened up about their relationship.

“I approve of whatever makes my brother happy,” Katherine told E! News. “He’s a 21-year-old college kid, how could he not be [happy].”

The week before, Miley was spotted hiking with her dog while listening to some tunes.

15+ pics inside of Miley Cyrus hiking in L.A….