Mariah Carey is at a stage of her career where she now embraces her reputation as a Pop Diva - but it seems like she hasn't lost her sense of humour, either.

Carey had an exchange with fellow pop star Katy Perry on Twitter yesterday, after Perry tweeted about "a rumour that Mariah Carey used to have puppies backstage at her request to make her feel happy".

The 'Always Be My Baby' star responded with a quip from Mean Girls that was just the right balance of humour and eye-rolling sass.

See it below:

Perry seriously missed a trick by not using this gif, though...