Isla Fisher just snipped off 25 centimetres of hair.

Image: Getty.

Getting a major haircut usually requires months of deliberation and hours of Pinterest-searches.

Not for Isla Fisher.

With just 40 minutes before she was due on the red carpet for the premiere of husband Sasha Baron-Cohen’s latest film Grimsby, Fisher spontaneously opted for a significant chop. Yes, we’re talking 25 centimetres of hair, gone.

Bam.

???????? Love me some #IslaFisher????????. Smart, funny, talented and knows how to take a selfie. NEW haircut for tonight’s @brothersgrimsby Premiere. Makeup by the talented @sabrinabmakeup styling @jillandjordan #hairbyadir #waves #deconstructed #undone #islafisher

A photo posted by Adir Abergel (@hairbyadir) on Mar 3, 2016 at 7:19pm PST

  “We did it last minute before she went on the red carpet, about 40 minutes before she left,” her stylist Adir Abergel told PeopleStyle. “It was my idea. I came in and she was like, ‘What do you want to do this time?’ And I said, ‘Let’s do it — let’s chop it off!'”

  Abergel describes the final look as a "new, modern length" which is a slightly longer version of the lob that's been so popular of late. So if you thought we'd exhausted the lob, think again - it's time to say hello to the LLob (longer lob). (Watch: Mia Freedman goes for a serious chop. Post continues after video.)

"Isla has such gorgeous hair — this length feels very sensitive to go a lot shorter. You either have to go super-short with a chin-length bob or keep it long. I think when you go in between, it can go a little mumsy," he said. Mumsy or not, we're loving Fisher's new 'do - and are now taking bets on how much she gets chopped off next. Another 25 centimetres, anyone?

Sarah-Michelle Gellar

If the news of a new Cruel Intentions film got you intrigued, prepare to get very, very excited. With filming about to get started, original star Sarah-Michelle Gellar has unleashed her dark side... literally.

#brownhairdontcare (actually kind of love it!!) thank you everyone @andylecomptesalon

A photo posted by Sarah Michelle (@sarahmgellar) on Mar 4, 2016 at 5:44pm PST

The natural blonde actress posted a sneak peak of the process on Instagram before the final reveal.

Kylie Gillies

No, the lob's not dead yet. The Morning Show host Kylie Gillies also opted for the chop late last week and looked pretty happy with the results.

?? Chop ?? Chop ?? A photo posted by Kylie Gillies (@kyliegillies) on Mar 2, 2016 at 11:10pm PST

The cut was the work of Justin Calverley at Edwards and Co, with a lighter colour update for her balayage too.

Are you still a fan of the lob?