The crop is here, it's chocolate brown, and it's not yet blossomed into full asymmetric glory. Still, we applaud it.

Here we go. Yes, it's black, but it's also gloriously asymmetric. It's the beginning of an era where 'I'd like to see the manager please' hairstyles became fully legitimised.

If you can look good with your hair spiked vertically, then why not give it a go? We wouldn't necessarily nip to Tesco like this, but we salute her.

A sleeker, more grown-up version of the crop, Frankie still has it dyed jet black. Something that she'll experiment with over the coming years.

Now a lighter, chocolate brown colour, as Frankie's matured, so has her crop. Softer, shinier and a lot more flattering.

Frankie has a short-lived dalliance with blonde while doing the Help For Heroes show.

So after black, dark brown, and blonde, she decides to split the difference with gorgeous caramel low lights. And the crop is looking windswept and super-natural.

Two years on and the crop is still going strong, but looks to be growing out a little. Maybe it's time for a change?

She's pregnant, and opted for long, caramel low-lit extensions. Shiny, natural and gorgeous.

While performing at British Summer Time, Frankie goes for shorter extensions, presumably so the hair doesn't get in her face whle performing.

Now a mum, Frankie hasn't lost her glam edge. The crop is back, it's slicked, and it's cooler than ever.

How did her hair grow so fast?! We assume these are incredibly well done extensions - but still, the sleek and straight lob suits her as she starts Strictly Come Dancing rehearsals.

And for a third time, the crop is back. This time with a contemporary twist in the shape of a plaited faux undercut. Nice, Frankie.

It's full on bombshell time with these long extensions complete with subtle highlights and loose curls. Total siren.

A month later, and it looks like she's giving her hair a break from the extensions. Luckily, this cute and sophisticated lob (long bob) really suits her. As, we are starting to discover, does everything.

Still growing her hair out, Frankie has added some warmer tones while keeping her hair's natural wavy texture. We love this!

The best of the bunch, we think. Delicate, feminine and oh-so-pretty, this is pretty much Bob 101. And makes us want to run to the hairdresser.

A year later, Frankie has opted to return to the pixie crop - but has gone for a shocking platinum blonde colour that really suits her!

Frankie debuts a brand new style just three months later at The Sun Military Awards, ditching the bright platinum blonde colour for a more natural brunette.

Frankie appears to have gone ever darker with her hair, sporting an almost-black shade of her signature pixie crop in an appearance on Loose Women.