Speaking at her premiere in London, Katy Perry revealed her top four tips to mending a broken heart.

Katy admitted that needing “friends, family and a lot of junk food" were all crucial to the mending process.

The singer also added that “a prayer every night” helps commenting, “Oh help me God”.

The singer has been experiencing relationship heartache, after her husband Russell Brand filed for divorce after just 14 months last year.

Katy documents the breakdown of her marriage in her big screen movie Katy Perry: Part of Me 3D.

Katy Perry: Part of Me is due in cinemas in the US and UK on 5 July.