Singer thrilled to be part of her sibling's big day when she marries Pete Wentz

Jessica Simpson has revealed she is going to be sister Ashlee’s maid of honour when she marries Fall Out Boy Pete Wentz.

The couple announced their engagement last month but have kept quiet about their wedding plans.

But when asked if she was going to be her sister’s head bridesmaid by People, Jessica, 27, replied: ‘Of course!’

Ashlee, 23, has declined to comment on reports that’s she’s pregnant.

Ashlee Simpson and Pete Wentz

Alison Adey