My mother had a client who was an apple shape, and I had to design a few things for her, if I had to dress her today, here's what I would pick for her.
A dress that accentuates the under bust, and falls away from the body. The length would be adjusted in proportion to her height.
An open duster in a textured linen, the one below is a lace trench coat.
Notte by Marchesa
Apples have the best evening wear options.
A jacket about hip length with a waist defining combination beneath.
Tory Burch Jacket