Jem is 5'8" tall.
Jem co-wrote the song "Nothing Fails" with Guy Sigsworth and Madonna.
Jem once worked for a festival company. She was doing behind-the-scenes work (directing traffic, etc.) and the festivals would cater for over 25,000 people.
Jem often gets frustrated when Jem and the Holograph jokes are made at her expense.
Jem had a childhood crush on Harrison Ford.
Jem used to run drum and bass classes for 300-400 people.
Before she became a professional singer, her friends had always called her Jem.
The little girl that appears on the UK album cover of Finally Woken is Jem herself.
Jem's song "Wish I" was used as the title theme for the British reality show Celebrity Love Island.
Jem attended Sussex University. She holds a degree in law.
Jem starred in the season one finale of The OC (as herself), singing at the wedding reception. She sang one song, and Maybe I'm Amazed, a Paul McCartney song.
Jem has three siblings: Chloe, Justin, and Georgia. Justin and Georgia perform vocals of the band The Weapons.
Some of Jem's music influences include Stevie Wonder, Sam Cooke, Gravediggaz, Eminem, Cypress Hill, Bob Marley, Vivaldi, and Liszt.
Jem started writing and singing songs with basic recording equipment at the young age of 13, and decided she was going to be a singer
Jem: (about being signed to Dave Matthew's record label) I really like it a lot, but they should pay me for the publicity I give them. I think they're fantastic, and I would recommend them to everyone.