to dress to the nines, to dress in one’s best bib and tucker
Contexto
Eleanor looked abstracted and fiddled with her pearls. " What, dear? Oh, no thank you. Mrs. Whatsit does what she can though it's never quite enough and she does complain so. But there's only me left to bother about now, so who cares how the place looks? " " Now, now, " said Sally firmly, putting an arm round the slumped shoulders and giving her a squeeze. " That's no way to talk. You should get into your glad rags and go out on the town. What say we shake a leg together like we did that time before? Streisand's coming to town in a week or so, for the first time in ten years. I could try and get tickets if you like. "