If you can not find an embellished dress that you like, just wear a statement necklace with a simple black sheath dress like this $ 13 dress from Target. (lauralily.com)
It's really just a plain black sheath dress that should go with lots of items but because it billowed out below my bust, it looked like a tent. (whenthegirlsrule.com)
The sexy and elegant black sheath like the one the Mad Men actress selected for the Jaguar XJL launch party in Pebble Beach, Calif., accessorized with matching heels and clutch. (people.com)