The two hit the US chat show to perform 'Change Your Life'.
Iggy Azalea made an appearance on the popular American TV programme Live With Letterman this week to perform her hit single 'Change Your Life'.
The Aussie hip-hop artist and her accompanying band wore all white as they danced to the track, with one guitarist coming to the fore front of the stage to rock out alongside the singer.
T.I came out of nowhere to deliver his guest verse before casually disappearing backstage. Letterman jokes at the end of the performance; "Where did you go? What is this half time?"
'Change Your Life' is the third track to drop off Iggy's debut album, following her debut single 'Work' and 'Bounce.' Catch the album in stores and available to download next year.