Brie Larson is in talks to replace Emma Stone as Billie Jean King in 'Battle of the Sexes'.

The 25-year-old actress - whose previous film credits include '21 Jump Street' and 'The Gambler' - has been approached to play the iconic female tennis star in the movie, after Stone was forced to withdraw due to a scheduling conflict.

The movie will tell the story of how King in 1973, then aged 29 and the world No 2 female tennis player, was challenged to a match by Bobby Riggs, a retired former Wimbledon champion.

She accepted the invitation, with a $100,000 prize on offer to the winner of the high-profile event.

Meanwhile, Brie admitted recently she was once overawed by having to promote her movies, but said dressing up has helped boost her self-confidence.

She shared: ''I used to get so nervous about walking red carpets.

''The photographers yell at you, and you can't see anything!

''In my day-to-day life I'm not really one to get dressed up or put on makeup, so I'm finding that it's such a fun time to play dress up.

''I'm learning that the power of the right outfit can totally change your perception and confidence level.''