Her best outfit was probably her CBB19 launch night outfit. I can't post a photo directly but it's in this bbspy article:
http://cdn.bbspy.co.uk/images/upload...emmawillis.jpg
In terms of her worst outfit, the trousers she wore for BB18's finale night was… "questionable," shall we say?
https://www.google.co.uk/amp/s/www.e...Tom-Barber/amp
She usually looks great though.