I was at a wedding last year where the mother of the bride was about 5' 2" and weighed about 14 stone. She normally looks quite stout -- but that day she looked lovely in a long, floaty dress and and a marching longline, floaty jacket with 3/4 length sleeves.
The long dress gave an illusion of height and the floaty jacket covered a multitude of bumps and lumps sins.
She wore a pretty pair of flat shoes and a big hat. No, she didn't look like a standard lamp.
She had the outfit especially made for her after chosing a pattern and material and I don't think it cost that much.