Her Reputation by Talbot Mundy

Consuelo worked with nimble fingers, tying this, adjusting that, while Jacqueline did her best not to move too often at critical moments. But you can't stand still before a looking-glass -- not while a wedding frock is being hung on you that looks as if angels made it in a lacy paradise beyond the clouds. You absolutely must turn suddenly to see how it looks behind; and if you don't jump excitedly, and sway your supple body to see how perfectly it fits about the waist and under the arms, you're not human and seventeen.

It was all so exciting and wonderful that it drove Jack Calhoun out of mind, until Consuelo glanced at the clock and caught her breath.