Introducing Ms Mackintosh - former make-up artist and Made In Chelsea star turned fashion designer and now, a serious weightlifter. We headed down to Millie's favourite studio for an exclusive workout with her PT Rich Tidmarsh.

Want a body like Millie? Get her nine-move workout here.

Or watch her in action below:

Video produced by LoadSetRace.com

Bear Grylls//Digital Spy

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