The gorgeous DJ has added another new role to her resume and, doing her charitable bit, Sarah-Jane is hoping she can help to put Teen Unite on the map.
Helping young people through cancer and other life-limiting illnesses, Teen Unite offers to provide support for all affected 13-24 year olds.
Speaking about her role as an ambassador, Sarah-Jane said she was "so proud" to be involved with the charity.
She added: "[Teen Unite] is an amazing charity that offers vital support during such a difficult time.
"These young people won't find this support elsewhere, which is why I am so keen to help this charity to gain the recognition it deserves."
As well as her ambassador work of late, Sarah-Jane is busy fronting The Xtra Factor as the show's new host.
Treating two lucky ladies from the charity, Sarah-Jane invited her special guests into the studio for Sunday night's show.
During the episode, Mel B lost her first act as Jake Quickenden was sent home by the judges following his sing-off with mixed group Only The Young.
Happy to give her guests a front row seat to all the X Factor action, alongside a photo of herself with the young girls, Sarah tweeted: "Was amazing to meet Amy & Rachel tonight, such fabulous women! Glad you could come to the show @teensunite forever."
Reveal is now on Google Plus! Join us here for the latest pictures, fashion and celebrity news!