I've said it once and I'll say it again: You can never have too many highlighters . Cream, liquid, powder, Champagne, rose gold, bronze — there are so many varieties of glow-givers just waiting to gussy up our cheekbones. But when it comes to picking the next one to add to our collections, we don't always know which to dish out for. That's why we turn to those that have been tested on the red carpet to inform our shopping lists.The reasons to love highlighters are endless. Not only do luminizers brighten up dull skin, but they can subtly contour your face. In fact, celebrity makeup artist Thalia Sparrow reaches for highlighters over contouring products, because they provide a natural, three-dimensional look.So, if you've ever wondered what radiance-boosters celebrities wear to their biggest events, you finally have your answer. Ahead, behold the actual highlighters used to adorn celebrity faces.