The 'Cinderella' singer Instagrammed the results of four hours in the salon on Friday (14 November) and we have to say, we think she looks pretty darn fabulous.
Diana ditched her fair hair back in August and turned her long locks a vibrant shade of red among mixed reviews from her Instagram followers.
"Oh dear, sorry hun, much prefer u blonde," said one blunt fan!
We thought she looked pretty cool, however, and hey, a change is as good as a rest and all that.
But her red locks didn't stay put for very long, and after just a couple of weeks it had faded to a rather nice shade of peach, before the former X Factor semi-finalist returned back to a dark, ombre blonde again.
Diana was very blonde when she first hit our screens on The X Factor in 2008 and while the singer and actress has come a long way since then, we're very much enjoying her return to the fair Northern lass we know and love!
Her new look was created by expert colourists at London salon Percy & Reed, whose co-founder Paul Percival has been responsible for Cheryl Fernandez-Versini's fabulous hairstyles on the live shows of this year's X Factor.
Cheryl AND DIana on their books? Pass us the phone, please – we want an appointment right now!
Do you prefer Diana with blonde or bright red hair? Let us know below. Our fave comment across the site each week wins £50!
Reveal is now on Google Plus! Join us here for the latest pictures, fashion and celebrity news!
Got an iPad or iPhone? Reveal Mag is specially designed to fit!