Rebel Wilson leaves fans speechless in iconic Britney Spears outfit

The Senior Year star has lost over 30kg

Rebel Wilson looked like a bonafide popstar as she recreated an iconic Britney Spears look for her upcoming movie Senior Year.

The actress donned a shimmery green off-the-shoulder top and skin-tight trousers in homage to Britney's 1999 hit (You Drive Me) Crazy.

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Posing in her trailer, Rebel appeared to have had extensions added to her hair, which was styled into tight curls just like Britney's.

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WATCH: Rebel Wilson twerks in cheerleader uniform

Sharing a clip of her final day on set, Rebel took fans through her makeup and wardrobe and revealed some behind-the-scenes footage of filming what appeared to be a Britney tribute.

Rebel also emulated Britney's style by appearing in another look from the music video, a pink waitress uniform with her hair in similar pigtails.

Fans rushed to compliment the Australian star, who recently revealed she has lost over 75lbs since overhauling her lifestyle.

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Rebel emulated Britney in her shimmery green top

"Absolutely stunning darling, you look gorgeous dear!" exclaimed one follower. A second said: "Yass! So excited for Crazy, this is going to be epic!"

A third added: "You look absolutely amazing," and a fourth gushed: "I hope you're taking that outfit with you because you look adorable!"

Senior Year follows a cheerleader (played by Rebel) who wakes after a 20-year coma and returns to high school to regain her status and claim the prom-queen crown which had eluded her two decades earlier.

Rebel also donned a similar waitress uniform to Britney's

Rebel's sneak peek comes after she gave fans an update on her health journey during a Live Q&A on Instagram on Monday.

When asked how much weight she has lost, she replied: "I try not to keep track of it too much, but it’s like 70 pounds, 75 pounds, maybe a bit more. Which in kilos, my international audience, is like 30, 35 kilos, close to that."

She added: "So far have not gained any of it back, which is pretty cool, because never in my life have I been able to do that."

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