Lyric discussion by MistaB 

Cover art for Girls lyrics by Marina and the Diamonds

I interpreted this song as the artist talking about the unreasonable expectations that society place upon girls but also about how girls bring each other down.

"Is there any possibility You'll quit gossiping about me? To hide your insecurities All you say is blah, blah"

It sort of infers that she was put down by girls who probably were made to feel really insecure about themselves. These insecurities are in turn born from the expectations placed upon girls and societies' unrealistic idea of beauty.