Mixing old with new is easier than you may think. You can achieve a Parisian modern eclectic look using vintage finds such as a large mirror with gold colored paint. I love this blend of different pieces in Inside Closet's post. The best thing about this look, is you can put this together with lots of vintage pieces. If you want to find a large vintage gold painted mirror, Etsy has a wonderful selection, and there is a wide range of pricing.
Hacker Tip: Find an old frame and spray paint it gold! You can then frame it around a mirror.