Halloween this year fell on Sunday and not to mention we are still not over all the spooky and sensual costumes of the celebs. Some celebrities transformed into spooky vampires while some became sultry blood nurses. But there was Hailey Bieber who slipped into the dress of Britney Spears. The love of the model and her husband Justin Bieber for Britney is known to all. Hailey, one of the highest-paid runway models all around the globe, put her right foot forward to make her admirers droll over her. Hailey didn’t don just one or two costumes of the actress but opted for four iconic costumes of her.

Over the year, Hailey has successfully established herself as the most successful and highest-earning model of the fashion industry.

Of course, her school girl-Esque look complete with furry pigtails and a grey sweatshirt from Hit Me Baby One More Time made the cut.

Wrapping up this round-up was her fourth ensemble in a pink crossed-front bikini with blue jeans and matching bottoms worn on the outside from Britney's Slave 4 U video.

"Happy Halloweekend the first concert I ever went to was the queen @britneyspears and I’ve been shook ever since." Hailey's post received a lot of love from her fans