Okay, here are a couple more pages, showing Ligia in gowns at the 2001 Miss World competition:

Gown with patterned "corset"-like top (scroll down – several pics of gown): http://translate.google.com/translate_c?hl=en&u=http://www.missnicaragua.com/01MWSA.htm

Another look at the patterned corset bodice: http://translate.google.com/translate_c?hl=en&u=http://www.missnicaragua.com/01MWCA.htm

Gown with embroidered-looking top (scroll down – several pics of gown): http://translate.google.com/translate_c?hl=en&u=http://www.missnicaragua.com/01MWfinal.htm This gown seems most likely to be the one iRiShBaBe is talking about; though it appears in these photos to be white, the reflective fabric may have appeared blue on video as Ligia was moving around under the stage lighting.

Thanks, E.T., for posting that translation info from google; that helped a lot!