Meryl Streep "can't believe" she swore during her acceptance speech at the 69th Annual Golden Globe Awards last night.

The 62-year-old actress received the gong for Best Actress in a Motion Picture (Drama) for her turn in The Iron Lady.

Meryl walked onstage without her reading spectacles and exclaimed "Oh, s**t, my glasses!" The star is embarrassed at her blunder.

"I can't believe I said s**t on TV," she told reporters backstage at the prestigious awards ceremony. "I had such a good speech and I couldn't see it. Even if you held it in the front row, I couldn't read it because I left my glasses at the table."

Meryl was undeterred by the slip-up though, and attempted to deliver her speech from memory as Harvey Weinstein and George Clooney passed her glasses through the audience.

Meryl is grateful for the gong. The iconic actress has garnered critical acclaim for her portrayal of former British Prime Minister Margaret Thatcher, and says she is happy with her ever-varying film roles.

"I think about each individual story, and if the story's interesting, it doesn't matter if it's a waitress or a queen," she said.

"I'm not discriminating that way. I'm happy to play interesting people who have challenges in one way or another."