Vanilla
Vanilla is a term which refers to what a society considers to be standard, traditional or normal. Different cultures, subcultures, and individuals have different ideas about what constitutes vanilla, so 'vanilla' has no direct meaning other than in relationship to the alternate under discussion. Anything that is not vanilla might be described as kinky or fetish.
The term 'vanilla' derives from the use of vanilla extract or an artificial substitute as the most popular flavouring for ice cream, and by extension meaning 'plain' or 'conventional' (especially as vanilla-flavoured ice cream is white).
Similarly, vanilla clothing refers to conventional, non-fetish clothing. Its definition has varied over time; for example, much PVC clothing would now be deemed vanilla, whereas corsets are now kinky.