X Factor alum Mary Byrne has shed six stone in recent years, with the semi-finalist undergoing a major transformation since she competed on the ITV series.
The singer, now 62, came fifth in the seventh series of the competition in 2010 - with her having been affectionately dubbed 'Tesco Mary' at the time by fans as she worked for the retailer in Ireland.
It's now been more than a decade since she competed against the likes of One Direction on the show, with Mary almost unrecognisable from the woman on our screens.
