We barely recognised Fearne in this picture, which she posted to Twitter on Thursday morning (12 September).
Fearne added the caption: "Yup. This is my best look yet! Watch tonight's celebrity juice if you wanna know what's going on!"
We're guessing she's doing some sort of geek chic/schoolgirl theme. Does she remind anyone else of Katy Perry's Kathy Beth Terry character in her 'Last Friday Night (T.G.I.F.)' music video?
Fearne has just returned to Celebrity Juice following maternity leave, when she was temporarily replaced by Kelly Brook.
The 32-year-old gave birth to first child, son Rex Rayne Wood, in February.
Aside from filming duties on Celebrity Juice and returning to her Radio 1 slot this month, the star is also busy with her fashion business, and is gearing up for a showing at London Fashion Week today.
She tweeted this morning: "Ahhh today is the day. My fashion show for #LFW at Claridges for my @verynetwork collection! Fingers crossed #VERYFEARNE14."
Despite her hectic professional life, the most important thing to Fearne is being a good mother to Rex.
She told the October issue of Cosmpolitan: "Having Rex has been a perspective changer and it's made me look at the industry differently. I work to live now rather than live to work. All those clichéd things have happened – I'm more overwhelmed and full of love than you can ever imagine because I've not had it before. My main priority is looking after this little man. And I feel totally over the moon that I've been able to do this."
Celebrity Juice airs this evening on ITV2.