Meryl Streep literally demonstrated her black belt in red carpet dressing at tonight's 2010 SAG Awards.

Staying true to her accessory du jour, Streep cinched the waist of her full-length silk Balenciaga gown with a wide, triple-buckled belt which added a bit of toughness to the lush draping, plunging neckline and splashy blue-and-green pattern of her dress. Streep completed her look with Fred Leighton jewelry.

The legendary actress has been buckling up a lot lately. Most recently, she wore a belted Chris March -- as in the "Project Runway" alum -- dress to the 2010 Golden Globes last Sunday.

Back in November, at the Gotham Independent Film Awards, she wrapped up in a wide black belt. And at last month's New York premiere of her current hit film, "It's Complicated," she again strapped on a thick, gold-buckled belt.

Could she have been influenced by all the belted dresses she wore in "Julie & Julia?"

For more SAG Awards red carpet coverage, check out our gallery of dresses.