Now we know Ferne is pretty skilled in the barnet department as she's a professional hairdresser, but who knew Billie was so adept with a pair of scissors?
To be fair, we've not actually seen the results yet... or in fact know whether Billie DID actually cut Ferne's beloved locks or whether they were just messing about.
But we're loving the idea of Billie doing a Phoebe in Friends and creating some sort of crazy, short hairstyle that Ferne might not have asked for!
The girls, who've been close friends for over 10 years, wrote some cheeky teasers on Twitter yesterday, before Ferne, who's just returned from a holiday in Spain, posted this photo above.
"I'm just about to have my haircut....by @BillieFaiers" wrote Ferne, before Billie responded.
"Lovely dinner round @fernemccann," Billie tweeted. "She has cut me in a 'Lob' (long bob). And now I'm about to do hers."
"She for real cutting my hair!" Ferne finally posted. "Hands up if you cut your friends hair."
Er no, never. We don't even trust ourselves to cut our own fringes or trim our split ends, let alone go near our friends' crowning glories!
Let's just hope Billie did a good job.
Or they were just pretending!
Watch this space...
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