Okay, okay it's a wig - but can we just take a second to soak up how glam she looks, anyway?
The X Factor presenter who is famed for her ombre locks swapped London for Hollywood when she channelled her inner Barbie girl on a shoot curated by celebrity photographer Nathan Pask, who very recently teamed up with The Only Way Is Essex star, Jess Wright.
Reality beauty Jess also looked strikingly different as she donned a platinum blonde wig and joined the promotional trail for new film The Transporter Refuelled, which was released in cinemas last week.
But back to Ms. Flack!
Caroline simply captioned the post in which she nails a fuchsia lip and rocks breathtaking ice blue contact lenses with, "Shoot" but even though she is keeping its purpose petty hush hush, it seems her 602k followers were still ultra impressed with the stunning snap.
One fan commented: "A stunning shot. Beautiful in whatever shade," while another said, "Now that is one gorgeous pic."
We totes agree, guys.
In another picture from Nathan's repertoire, Flackers gives her short crop the elbow in favour of flowing extensions and goes back to her roots with an au naturale brunette shade.
The star smoulders with kohl rimmed eyes and a feline flick while nattering away on a telephone.
Is there a look she can't pull off?
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