If you're thinking about opening a blog, but you're without ideas how to name it, you should think about what you like the most and what will your blog be about (fashion, beauty, lifestyle, books, ...).
And if you're still clueless, you might want to try some blog name generators. Or, look at my ideas...

Before Go Prada Yourself, there was Trendy Thursday. I decided to change the name because I wanted something more unique, with a pinch of sass. If you're here because you want to change your blog name, take some things into account. First of all, make sure to let your followers know that you've moved to a new address (via twitter, facebook, instagram...). Then, change your blog's URL. Lastly, create a NEW 'blog' with the old name (and the old URL name), and make sure to make a post about your new address. 
And here are some ideas for a beauty/fashion/lifestyle blog:
Crowd Beauty
Beautyable
Beauty Ship
Fashion Gesture
Beauty Owned
Basheo
Beauty Tart
Cronut Couture
Classic Blur
Vertigo Beauty
BeautySheSaid
Behind Beauty
The Beauty Cast
The Beauty Spell