Yea, even slim people can have a bit of under the bum, back thigh cellulite.
When it happens to me, I know I'm not doing other non-cycling exercises.

The quality of the photo is not great but reality is I don't think any high calibre photography could make it "better", short of photo adjustments thereafter.

The panty is cute (though I don't know how "useful" the front would have been for any potential purchaser).

Though none of us would ever model /place a photo of ourselves in our underwear here on the forums, we have "modelled" proudly some cycling clothing purchases. Now, that is as real as it gets and for certain might have tipped the hesitant readers who were thinking of buying something similar but still unsure.

So reality "modelling" is happening among us..informally on the forums. It is the value of a retailer allowing Internet forums to happen with links to photos.