SYDNEY SWEENEY admits to getting "pummelled" throughout filming of her Christy Martin biopic - after piling on TWO STONE for the role.

Sweeney stars in the title Christy - based off the incredible life and career of champion boxer Martin.

Martin married her coach Jim Martin - despite being a lesbian - before he tried to KILL the fighter by stabbing and shooting her.

The boxing great - who later married her former opponent Lisa Holewyne - survived the attack while Jim was jailed for 25 years.

Martin's sensational story is to be played out on the big screen by Euphoria's Sweeney - who went under a dramatic transformation for the role.

She trained for three months with a boxing coach before filming while also doing weights and having a nutritionists.

Sweeney worked out up to three tim

See Full Page