EXCLUSIVE: Sarah Silverman Reveals A TMI Red Carpet Secret About Her Low-Cut Dress at the SAG Awards -- and It

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Sarah Silverman knows the secret to avoiding red carpet wardrobe malfunctions.

ET talked to the 45-year-old actress at the SAG Awards on Saturday -- where she's nominated for Outstanding Performance by a Female Actor for her dramatic turn in I Smile Back -- and she was just as candid as ever about taking some precautions due to her low-cut outfit. Silverman stunned in a curve-hugging nude strapless Vivienne Westwood gown, but was extra careful about showing a little too much.

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"I know it's iffy, but I put makeup on my areolas just in case something happens," Silverman said. "We're pros."

Silverman was accompanied on the red carpet by her boyfriend, Masters of Sex actor Michael Sheen. The two gave a peek at their easygoing relationship when they joked about meeting the legendary Carol Burnett, who's receiving a Life Achievement Award at this year's SAGs.

"I heard Carol's a big fan ... of mine," Sheen joked.

"Babe, stay in your lane," Silverman cracked back. "He's a dramatic actor."

WATCH: EXCLUSIVE -- Sarah Silverman Opens Up About Depression and Her Mother's Death

ET caught up with Silverman last month, when she revealed the hilarious way she found out she scored a SAG nomination.

"My manager and partner Amy [Zvi] called me crying. I thought somebody died," she said.

Watch below:

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