Alexa has appeared in a number of music videos and her own micro-series. Below are links to videos with Alexa.

A promo trailer for the new look Popworld with Alex and Alexa doing some dancing.
Fashion TVs (FTV) micro-series starring Alexa as Jake, a northern girl starting a career as an agency model in the big city.
Alexa as Streets man Mike Skinner's girlfriend in this music video.
See Alexa lounging with Holly Valance in this music video.
See Alexa cleaning Westlife's pool in this music video.