The 19-year-old pop star - who has always shared a room at her parents` house in Brentwood, Essex with her sister - has bought a one bedroom apartment in a trendy area of east London so that she can enjoy some private time with her rumoured new boyfriend, model Oliver Cohen.
A friend of the `Turn It Up` singer said: "Pixie`s been wanting to move out of her mum and dad`s for ages and now things are going so well with Oliver she thought it was the perfect time.
"She thinks renting is a waste of money so she`s bought a gorgeous apartment in Shoreditch as a gift to herself for all of her hard work over the last year. She is massively excited and can-t wait to finally move in next week."
Pixie is particularly delighted by her purchase as it is close to exclusive members club Shoreditch House - frequented by stars such as Madonna, Heidi Klum and Billie Piper - where she loves to party.
The friend added to the Daily Star newspaper: "She thinks Shoreditch is the coolest place to be at the moment and also knows it`s not that far if she wants to pop back to Essex to see her parents.
"Pixie can`t wait to just be able to pop to Shoreditch House and hit the rooftop pool whenever she`s got some spare time.
Although she hasn`t moved in yet, the `Cry Me Out` hitmaker is already planning a big housewarming party.
The source said: "She`s already planning to have loads of parties herself and has been talking non-stop about her flat-warming event, but obviously she hasn`t mentioned anything to her mum.