After playing with my newer purchases for a couple of weeks, I can officially say that Flatter Me is a blush on me. I suppose I could wear it as a highlighter, but I've got other I like better for that (Shell Pearl is my newest love). I'm so glad I bought FM; I still don't care for the packaging because it feels so juvenile (and I grew up reading Archie comics), but I love this pearlmatte. I'm not that pale (maybe NC22) and it's definitely pigmented enough to be a blush. I like it a lot better than Cream Soda, which just was too...well...peach for my warm tone. It was kind of flat on me. I prefer peachy tones that have a little pink, like Immortal Flower.
For anyone still thinking that Shell Pearl and Flatter Me are near dupes, they aren't.
My family has an upcoming vacation to Miami coming up, and this will definitely go in the bag along with the rest of my one and done hot weather products like paint pots. I think I might go get a couple of the new Benefit creaseless creams to take with me as well. Regular shadows just melt off me in the heat.