Rebel Wilson dropped 70lbs back in 2021, and she’s committed to keeping the weight off.

On Sunday, the 45-year-old Australian actress — who wore a bunny costume to host an Easter egg hunt — took to Instagram to reveal what sweet treat she will be avoiding over the next six weeks for a health challenge.

And she encouraged her 11 million followers to join her as she cuts out chocolate and ice cream. Uploading a brief video clip, the Pitch Perfect star said, ‘Who’s up for a six-week health challenge? I know I am because I’ve been really indulging over Easter.’

She added, ‘And also, quite frankly, for the last couple of months and I really want to be a healthier version of me.’ 

Wilson captioned the post, ‘Who’s in for a 6 week health challenge? The challenge is to give up 1-3 things you’ve been indulging in lately (mine is chocolate + ice cream) and instead do something positive for your health (mental and physical) – so this week it’s to write down 5 things every night that you’re grateful for! #6weekrebelhealthchallenge.’

Rebel Wilson dropped 70lbs back in 2021, and she’s committed to keeping the weight off

On Sunday, the 45-year-old Australian actress took to Instagram to reveal what sweet treat she will be avoiding over the next six weeks for a health challenge

‘So I’m going to give up chocolate and ice cream for the next six weeks. What are you going to give up?’ she asked fans in the recording. 

‘Instead, each week I’m going to do something positive for my health,’ the blonde filmmaker declared. 

Read More Rebel Wilson reveals her two-year-old daughter Royce is ‘high maintenance’

Rebel has previously said that her Pitch Perfect contract prohibited her from losing weight.

The movie franchise came to a close in 2017 and four years later the mother-of-one lost over 70 pounds.

In July 2021 she revealed on Instagram Live about her weight loss journey: ‘It first started when I was looking into fertility stuff and the doctor was like, “Well, you’d have a much better chance if you were healthier.”

‘That’s kind of what started it, that if I lost some excess weight that it would give me a better chance for freezing eggs and having the eggs be a better quality. It wasn’t even really myself, it was more thinking of a future mini-me, really.’

And she spoke about it again with People in May 2022.

She shared: ‘I only started thinking of fertility when I was 39 so you feel quite late but then there are women in their mid-40s who’ve been successful.’

Rebel added, ‘Look at Janet Jackson, it’s pretty inspiring,’ referring to Janet giving birth to her son at age 50.

Wilson captioned the post, ‘Who’s in for a 6 week health challenge? The challenge is to give up 1-3 things you’ve been indulging in lately (mine is chocolate + ice cream)

In July 2021 Wilson revealed about her weight loss journey: ‘It first started when I was looking into fertility stuff and the doctor was like, “Well, you’d have a much better chance if you were healthier’

Wilson pulled out all the stops for Easter with daughter Royce, two, and wife Ramona Agruma

When she discussed fertility treatments with a doctor: ‘He looked me up and down and said, “You’d do much better if you were healthier.”‘

Rebel confessed: ‘I was taken aback. I thought, “Oh God, this guy’s so rude.” He was right. I was carrying around a lot of excess weight.’

She reflected at the time, ‘It’s almost like I didn’t think of my own needs. I thought of a future child’s needs that really inspired me to get healthier.’

Rebel is now mother to two-year-old daughter Royce, who she welcomed via surrogate and co-parents with wife Ramona Agruma.

In regards to how she achieved her weight loss, Wilson focused on becoming more active by walking and doing high-intensity interval training (HIIT) with her personal trainer.