Jesy Nelson from Little Mix was bombarded by online trolls with jibes about her weight while she appeared on the X Factor, but not only did the group go on to win the show - but she's also having the last laugh, by showing off a bangin' body at last night's Tickled Pink event in London.
Jesy showed off her curves in a pair of ripped leggings and a bright pink boots, but the 20-year-old looked visibly more toned as she confidently left the charity show last night.
Last week, we reported that the X Factor champ had been hitting the gym and even hired a personal trainer to help her reach her goals.
"Jesy's hired a trainer back home in Essex to make sure she's in top condition for the beginning of the year," a source told The Sun. "The group will be busy soon so Christmas was a good time to get going. She's aiming to have a session three times a week."
Jesy was actually a size 10-12, hardly obese by anyone's standard but she wanted to improve her fitness levels ahead of the X Factor tour that kicks off in February.
Back in November, Jesy's best friend Esin Guven told Now magazine that Jesy would never "starve herself" to lose weight.
We love your work Jesy!
Also at the event last night was Alexandra Burke, The Saturdays and Dionne Bromfield.