“toilette” in the context you specified (noun) is used in a similar way to “outfit”.
You can find some entries on Larousse.
Ensemble des vêtements et des accessoires portés par quelqu’un.
Other uses as noun Dictionary reverso include getting clean and/or groomed depending on the context.
Although… I also noticed that the English dictionaires have the definition of “toilette” as meaning “outfit”, for instance FreeDictionary.