An Ann Summers worker who dropped to a size six through bulimia has gone viral after doubling her weight and sharing powerful pictures of herself in her underwear.

Olivia Callaghan, 24, uses Instagram to document her recovery from an eating disorder which dominated her life for four years.

She regularly squeezed into shapewear briefs to make herself appear thinner but decided to ditch the control garment after realising she loves her body.

At her lowest weight Olivia was just 100lbs (7st) and a size six but now she's a size 14 and claims to be happier than ever with her figure.