Topping Windows with Pelmets & Cornices

I really enjoy watching old movies, especially those made when it was customary for men and women to wear hats. Toppers embodied a kind of formality of style that has fallen out of fashion, but I think there is something refined about seeing a dashing man like Cary Grant or William Powell (two of my faves!) in a cap.

What does this have to do with interior design, you ask?

I've begun to appreciate more and more the look of pelmet or cornice boxes atop a well-dressed window. Like a milliner's felted creation, a pelmet/cornice adds a finished touch that a rod can't always capture.

As with hats, there are many styles of pelmets to choose from:

(sample cornice/pelmet shapes via Pinterest)

Pelmets/cornices can be glamorized with fancy fretwork designs.

(via Dec-a-porter / Dec-a-porter)

They can be accentuated with bold, banded ribbon.

(via Lonny / Lonny)

Cornices can be scalloped for a feminine, soft effect.

(via Traditional Home / Decorpad)

A pelmet can utilize a classical greek key style.

(via Decorpad / House Beautiful)

Haven't had enough pelmets and cornices?
Here are a few more unique toppers for your windows.

Do you prefer neutral and subdued? 

(via CWB Architects)

Or bright and monogrammed?

(via Hi Sugarplum!)

How about a cornice that is architecturally arched?

(via Martha Stewart)

Or why not stud a pelmet for tough but sophisticated look?

(via Katiedid)

So, what's your take on dressing windows with pelmets or cornices?
Is the look outmoded like a man in a hat or timeless like Cary Grant and William Powell?