He's also fronted loads of live events, like Proms In The Park and the CBBC Golden Jubilee Party.
Previous jobs?
Holly was discovered by a modelling agency when she was just 14!
She's also done lots of commercials.
Jake's first job was as a hospital radio DJ. He also worked as a runner for a TV company.
Goss snippet!
Holly is studying for a psychology degree with the Open University!