Selena Gomez parties with Cara Delevingne

Songstress Selena Gomez posted a party picture of herself with model Cara Delevingne and Suki Waterhouse at Katy Perry's recent concert.
Gomez, 21, has reportedly parted ways with on-and-off boyfriend Justin Bieber last month, reported Radar online.
"This is how we do, da do," Gomez captioned the Instagram photo, quoting Perry's lyrics from her tune 'This Is How We Do'.
Gomez checked out of rehab in January after just a two-week stint.