Britney Spears debuts pastel pink hair

Britney Spears has unveiled a bold new hair colour.

The pop star took to Instagram on Monday to post a series of snaps showing her posing in a skin-tight leopard-print catsuit.

But while Britney's outfit certainly grabbed attention, many fans were quick to notice that she had swapped her signature blonde locks for a fun pale pink colour.

"Miss pussycat loves to bite... be careful ladies and gentlemen!!!!" the 39-year-old captioned the post.

Britney didn't detail the inspiration for her new hue. Yet, many of her 29 million followers were quick to voice their approval.

"OMG OMG PINK HAIR PINK HAIR," one fan wrote, while another posted: "Queen of pink hair."

Britney often shares details of her exercise regime and favourite new purchases with fans via the photo-sharing platform.

And after Reese Witherspoon recently uploaded a montage clip of her favourite outfits from the '90s, the Toxic singer followed suit last week. The video featured her sporting dresses with thigh-high boots, lace dresses, skater skirts, as well as crop tops and denim shorts during her many red carpet appearances throughout the early 2000s.

"Bringing it back to the 2000s when everything was simpler before social media!!!! Should I bring these outfits back?" she asked.

In response, Adam Rippon wrote, "BRING BACK EVERY OUTFIT," while another fan posted, "YES PLEASE! And your suede coat with the fur collar!!!!!!!!"