She starred in the 2010 film It's Kind of a Funny Story alongside Emma Roberts.
When you look at the before and after pictures, you can see that there are slight changes in her nose shape.
Her performance is best known for her opening monologue in which she re-creates a Mary Hartman-esque nervous breakdown and locks herself in her dressing room.
On the very first day, I was so nervous.
Or is her recent appearance down to the use of dermal fillers or Botox? She stars in Yorgos Lanthimos's.
Her parents divorced when she was age five, and Gemma subsequently lived.