Published in Nigeria in 2011 but new to me this is a substantial (600 + pages) volume that explores dress traditions across numerous ethnic groups in Nigeria in considerable detail. The author Dani Lyndersay, a theatre studies expert, lived in Nigeria for many years and has a Phd from the University of Ibadan. She draws on both her own field and archive research and a pretty thorough overview of the literature illustrated by numerous line drawings. These drawings are in may cases quite detailed and make up for the limited and rather poorly reproduced photographs (often a problem with books published in Nigeria.) There is much new and interesting information here – 28 pages on the dress of the Kanuri, for example.
The book is not listed on Amazon but I did find it at an online seller here. I bought my copy at SOAS bookshop in London, who no doubt could obtain more.