On the train yesterday, I came across this ad, which is just for some mascara or whatever:

Sorry it's a little blurry. The text is 凛{りん}と際立{きわだ}つ艶ロング。
I'm just a little unclear on a couple of things.
For the first kanji, 凛{りん}, my dictionaries say it means "cold", but I can't see how that connects to mascara. Is that the right meaning?
The other question is on the last kanji, 艶. Is it read つや or えん? The different readings seem to have different meanings, but they could both apply. つや is "gloss, glaze, charm" and other meanings, while えん is "charming, fascinating". Which is it?
