Promoting fashion and make up is based mostly on pictures, so, my suggestion would be Instagram and Pinterest.
Maybe you should focus more on Pinterest, it can be a great source of traffic for these kind of blogs.
Check out what other fashion and make-up bloggers do there, see how they promote their posts. You'll see most of their images/pins have title written over. See example below
This pin got 1.8K repins, it's pinned sometimes in November 2015 and I believe it's still driving a lot of traffic to this blog. That's why I'm recommending to focus more on Pinterest. It can be really great source of traffic if you pin quality stuff and boost it with MP a little bit