The 33-year-old singer has been engaged to Graham Quinn for five years, and although they have daughter Ava, three, and three-month old daughter Hero together, she said she has been too busy to get hitched.
But she told Red magazine that Ava has other ideas.
'She made me a wedding dress. It's like a coil of silk with knitting wool and big sparkly gold frilly bits. It's fabulous,' she said.
But she said that she and tour manager Graham are trying to get things together.
'We're trying to sort it out,' she added.