Having dated Thomas Starr for nearly 10 years, Mel, who gave birth to daughter Scarlet in 2009, has previously shared her reluctance to walk down the aisle.
But the 37-year-old has said her and Tom are thinking about getting married - and she wants her daughter to be involved.
According to British newspaper the Daily Mirror, she said: 'Thomas and I have talked about marriage and it would be very cool to to have Scarlet as a bridesmaid. But we don't feel it's something we need to do right now.
'Scarlet is actually going to be a flower girl next year at my sister's wedding. We'd love more children.'