Armstrong started her career as a dancer from an early age but when her friend, Kelly O'Keefe had work experience with a music management company and was asked to put together a group, she joined
Deuce alongside Kelly O'Keefe,
Craig Young and Paul Holmes. Their debut single, "Call It Love" was released in January 1995, entered the
UK charts at number 21 and worked its way up to peak at number 11. The group went on to release two more singles and an album before O'Keefe decided to leave the group in November 1995 and the group were dropped from their label. The group decided to continue on a new label and O'Keefe was replaced by Amanda Perkins, for one single, before they disbanded. She then chose to train as a make-up artist, writing a column for
Cosmopolitan magazine before becoming the make-up artist for many British television shows such as
The X Factor, ''
Britain's Got Talent'' and many of Ant & Dec's shows. Armstrong was also the make-up expert on
This Morning, giving
makeovers and short make-up tutorials. She is now head of make-up and hair for
BBC One's
Strictly Come Dancing. In 2020, she was one of the Guest Judges on make up competition show
Glow Up: Britain's Next Make-Up Star on Series 2, Episode 6. ==Personal life==