Zoe Herriot was a companion in the British TV series Doctor Who. She was
working as an Astrophysicist when she first appeared in a story called 'The
Wheel In Space' at the end of the story, she decided to join the doctor
on his travels, and she went on to appear in a further 8 stories.
To find out about them, look at The Episode Guide
Zoe wore a variety of outfits during her stint with the doctor, some pictures of them are in The Zoe Fashion Parade
She's also damn cute in my opinion. How about seeing some pictures?