You are trolled way too easily.
To get back to the subject matter, "skinny" as being an attractive feature is only relative to the last century or so. If you look at any art media (sculptures, painting, etc.) representing women from before that, they were often heavy or as the old term goes "rubenesque". Being skinny was undesirable as it was associated with poverty and a lower social class.
Image not /a/ subject matter (as such is spoiler tagged), but related.