I have a gf that LOVES showing off, but never panties, because she rarely wears them.
She does wear skirts/dresses, but nothing short. But that certainly doesn't stop her from pulling them up, or opening them up, or even removing them in some cases. She likes to show her pussy, whether it's to a stranger or a friend.
The majority of her exhibiting involves her going braless. She is chubby, if not BBW, and has big, hanging tits, so depending on what type of top she wears, there is varying degrees of ********. Nipples poking is a given no matter the top, but some cling better than others, and will show the size and outline of her tits in great detail. Same effect as wearing a wet t-shirt; it's just not wet.
Likewise, she loves showing a camel toe, and tends to wear tight-fitting jeans that will enhance and feature it.
She wears leggings also, and has one pair that displays her fat camel toe to the point of being downright nasty.