"When I saw the lion on the TV I was deeply deeply shocked," said designer Mary Martin to the BBC World Service.
Martin explained that she decided to make the dress in black out of mourning for Cecil.
"The big fluffy bits along the top is the tulle, which is the lion's mane," she added.
"Different textures of tulle which I've attached to the dress. The back has got the silkiness and fineness of the lion's body"
Martin made the dress by hand and says that since learning of Cecil's death she has worked day and night to complete the dress in time for the fashion week show.
Martin's dress was shown at the fifth annual Africa Fashion Week London, at which emerging and established designers showcased their work.
Scroll through the gallery below for more highlights from Africa Fashion Week London 2015.