The acts are reportedly all on the guest list for Humes and Wiseman's big day and could make an appearance on stage.
Pixie Lott wants Ed Sheeran and Jessie J
Pixie Lott has revealed that she wants to work with Ed Sheeran and Jessie J.
The 'All About Tonight' singer said she's already discussed a possible collaboration with both artists.
"Me and Ed are going to try to do some writing together," she said.
"I joined him on stage at one of his shows recently so we have vowed to start writing some songs next."
She added to the Daily Star : "Jessie J too. We were meant to have a writing session years ago but our schedules didn't meet.
"We have to try and make it happen at last."
Ed was among the guests as Pixie held an album launch for her second record 'Young Foolish Happy' in London earlier this week.
In demand: Ed plays at Rock City in Notts and Jessie at the Hammersmith Apollo, London
Pixie Lott, Jessie J and Florence Welch talk exclusively to Heart about their amazing red carpet outfits. Take a listen!
Pixie Lott dresses like Madonna in the music video for her new single, Kiss The Stars.
Singer's new album will be called Young Foolish Happy