From Lindsay's Leggings Already Off the Rack! - E! Online
In the text below, what do the bolded words mean?
It's already waiting-list-only for slim-stemmed fashionistas looking to get their hands on a pair of the starlet's signature leggings, which after debuting in-store and on an L.A. boutique's website exactly one week ago have already sold out.
"slim-stems" - long, thin, but shapely legs.
"signature leggings" - the kind of stockings worn by,say, Britney Spears or Madonna which have become associated with their image.