The blonde bombshell shot to number 1 with her début single 'Mama Do' in 2009, and her first album sold over 1.5 million copies. Since then she's released two more successful albums and starred in her own movie.
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, 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.
Pixie Lott has revealed that she wants to work with Ed Sheeran and Jessie J.
Kylie Jenner, Michelle Keegan, Cheryl Fernandez-Versini, Jennifer Lopez, Lady Gaga and Drew Barrymore ditch the makeup and go for a natural look.
After all the glitz and glam of the 2012 Awards season, we bring you the red carpet show stopping gowns
See exclusive backstage shots from the Olly Murs and Pixie Lott gig at Hylands Park, Chelmsford!
Emma Watson and Cheryl Cole have just been snapped wearing the stars' latest fashion must-haves: hot pants! Take a look at all the celebs who dare to bare...