Alfred Angelo Special Occasion dresses are a mother's separates line where you can pick your top and skirt or pants and a jacket if you choose to have one.  It is available in all 55 Alfred Angelo colors, so lots of different options to choose from. 

 

Mary's also has a large selection of Mother's dressses.  Most of them are mock two pieces and almost all of them come with a jacket and a purse.  Mary's has also recently expanded their selection of colors with lots more to choose from.