As a girl who loves Vegas, I was a bit disappointed by Blush. It was advertised as a nightclub (it's even in the name), but it was much more loungey. I was looking forward to dancing the night away, and that just wasn't really the scene at Blush.
Overall, you need to know what you're getting into when you decide to go to Blush. I got in free and didn't have to wait in line, but that didn't automatically make it worth it to me. I ended up leaving not too long after and going to XS instead. I think that if I had been in the mood to go to a lounge, I would have been perfectly satisfied at Blush. But because it calls itself a nightclub, my expectations were not met.