A glossy mane is always party-appropriate, as actress Julianna Margulies proves here.

A mass of long, loose waves, like Julia Ormond’s, works equally well for both casual and formal fêtes.

A subtly retro half-up, half-down style, like Gwen Stefani’s here, will stay in place all night long when styled and finished with the right products and techniques.

Try a slightly undone updo, like actress Lauren Graham’s, to take an otherwise dressy gown to a much less formal affair.

Change a short style by adding a little spiky texture on top, as Halle Berry does here.