If you're interested in beauty/nail polish and you don't know about OPI, I'd actually be quite shocked. OPI is very well known and loved and seems to be the standard a lot of people compare other polish quality to. It's one of my top polish brands, my number one favorite being Zoya.
I believe the Starlight collection is OPI's holiday collection this year; I know for sure it's their winter 2015 collection. This collection has been out for a long time now and it should be readily available anywhere OPI is sold (though I recommend getting it at Ulta since A. they're on sale and B. you can use your coupon on them). As I said above, I ended up with nine out of the eighteen shades in this collection, so unfortunately it's not 100% complete, but I purchased these with my own money and I wanted to get shades that I knew I would use.
And that's what I have from the OPI Starlight collection! It's really hard for me to pick a favorite in this collection since I love all the ones I purchased. There are nine more that I didn't purchase; I'm not a fan of creams or reds, which are six of the remaining colors. I'm also missing one metallic that I actually do want and the two super weird glitter toppers that are not very good. Overall, I think this is an excellent collection and, if any of these catch your eye, make sure to try and pick them up at Ulta while they're still on sale (and don't forget to use your coupon)!
Thanks for reading! <3