Green with envy: Lady Gaga appeared to hint via Twitter on Thursday that Katy Perry's latest tour look is a rip-off of her own style and Katy hit back by poking fun at Gaga's SXSW performance  #RePin by AT Social Media Marketing - Pinterest Marketing Specialists

Lady Gaga tweets jab at Katy Perry

katy perry green hair 2014 I like it I like the blue and I like the pink

avant garde couture fashion cocktail dress from icicle fabric shapes Thierry Mugler...

Lower hand in pocket / touching dress, upper hand touching top of dress / hair, face looking behind.

The many (normal) outfits of Lady Gaga

The many (normal) outfits of Lady Gaga

Lady Gaga in platform McQueen shoes, 2011

Lady Gaga’s emotional response to her Oscar nomination: ‘This lends a voice to victims and survivors all over the world’

Picture of Lady Gaga — Lady Gaga Versace Fashion Show 2014 in Paris.

Lady Gaga: Front Row for 'Atelier Versace' Paris Show: Photo Lady Gaga lets her long locks flow as she steps out at the Atelier Versace Fashion Show held during Paris Fashion Week Haute Couture Spring/Summer 2014 on Sunday…

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Lady Gaga is blocked from performing inside a giant vending machine

Lady gaga, paint pallet makeup

Which Lady Gaga Are You?

Which Lady Gaga Are You? Applause Gaga You are super artsy and creative. You are one to start new trends. It's a goal to keep a clear path for where you are going in life and have fun while doing it.

Lady Gaga Oscars 2014

The Oscars 2014: Best After-Party Beauty

Pin for Later: The Sweetest and Silliest Celebrity Candids From 2014  Lady Gaga turned into a gypsy princess in this photo. Source: Instagram user ladygaga

The Sweetest and Silliest Celebrity Candids From 2014

Brows about that: Lady Gaga uploaded this snap of herself on Sunday, writing: 'This Gypsy princess is on her last road before home. Tired lady, happy baby' - as her artRave tour comes to an end