Wiktionary
doll up
vb. to dress oneself or another in formal or ostentatious clothing as if for a special occasion
WordNet
Usage examples of "doll up".
As the Sunseekers sank down onto the chairs, dejected, frightened, and exhausted, the caretaker cheerfully placed the baby doll up on the altar and fussed over it, straightening its lacy skirts, positioning the plump arms, dusting each sausagelike finger.
He held the Connie Companion doll up high, where everyone could see her.
She propped the doll up beside her and smoothed its skirt as well.
But just to show what a big heart he's got, Huizenga promises not to use any tax money to doll up the exclusive private suites and corporate skyboxes.