Katy Perry and Rihanna show support for star pals
by WEARING their mates' faces on their clobber

O-barmy ... Katy Perry wears tribute to US President Barack
GIRL stars get their pals down to a Tee — by plastering them on their chest.
The wear-a-friend trend doesn’t stop at one as our celebrity clothing chain shows.Singer Katy Perry, 28, pays homage to Queen of Pop Madonna, 54, who backs Barack Obama — just like, er, Katy.
Another “three-shirt” link-up sees Girls Aloud beauty Sarah Harding, 31, sweet on R&B star Rihanna, 25, who rocks up in a top showing Kate Moss, 39, smoking.
And why not model your model pals? Pop star Rita Ora, 22, honours her catwalk queen “wifey” Cara Delevingne, 20, who dons Jourdan Dunn, 22. Jourdan breaks the chain with a tee of late rapper Tupac Shakur.
It’s not the first time supermodels have got shirty with each other...