Nicole Richie has proved she still has a mischievous streak – the reality star and fashion designer became a genius prankster for April Fools Day!

Yesterday (April1st) Richie made sure April Fools went off with a bang, when she hacked into fiancé Joel Madden and pal Kim Kardashian’s Twitter accounts and posted a series of embarrasing messages.

Using Madden’s account – Nicole sent a tweet to Sharon Osbourne calling the 57 year old “yummy”, another to Paula Abdul claiming to be Joel asking to “smell her armpits” and one to Dolly Parton asking if she had “any milk in those jugs”.

When it came to the Keeping Up With The Kardashians babe, Ritchie pretended to be the reality star – posting a message from Kim to her fans saying : “Sometimes I think I’m a lesbian because HOT DAMN Nicole Richie is fine.”

Eventually Nicole revealed that all the crazy messages were from her – posting a picture of herself grinning on the top of their Twitter pages.