(written from a Production point of view)
Cleo Severy is a key costumer who worked on Star Trek: Deep Space Nine from its third season to the end of the series. Severy's name can be seen on a Starbase 375 personnel directory in the Star Trek: Deep Space Nine Technical Manual (p. 18).
Severy had earlier worked as the costumer on Matlock between 1987 and 1992. Severy later worked as a key costumer on Once and Again, Dollhouse, and the film The Bling Ring.