Transgender footballer Hannah Mouncey remains baffled by the AFL decision to ban her from entering this year's AFLW draft because of concerns over her size, saying the nature of the game itself is built around different body shapes.

Mouncey also believes the AFL were scared she'd get stronger if recruited to play in the women's competition.

Transgender footballer Hannah Mouncey.

She believes the issue that prevented her recruitment was she would put an extra 15 kilograms on to her 190-centimetre, 100-kilogram frame if she started training with a team.

"I think the biggest issue is not necessarily that I'm too big or too strong now," she told 60 Minutes in an interview aired on Sunday night.