Kristen Stewart put on a brave face when she stepped out in the daylight just two days after it emerged that she had cheated on boyfriend Robert Pattinson with married director Rupert Sanders, who is twice her age.

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Kristen Stewart put on a brave face when she stepped out in the daylight just two days after it emerged that she had cheated on boyfriend Robert Pattinson with married director Rupert Sanders, who is twice her age.

See more of : twilight, Robert Pattinson, Liberty Ross, Kristen Stewart

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Dressed casually in a pair of ratty gym shorts and a white T-shirt, the 22-year-old actress was spotted looking somber with dark circles forming under her eyes while out in Los Angeles last Thursday.

See more of : twilight, Rupert Sanders, Liberty Ross

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At one point the 'Twilight' star was seen pleading with photographers to leave her in peace.

See more of : Rupert Sanders, Robert Pattinson, Kristen Stewart

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Stewart had issued a public apology on Wednesday and took responsibility for breaking Pattinson's heart and coming in between Sanders' marriage to British model-actress Liberty Ross, with whom he has two children.

See more of : twilight, Rupert Sanders, Liberty Ross

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I'm deeply sorry for the hurt and embarrassment I've caused to those close to me and everyone this has affected," the New York Daily News quoted her as saying in a statement.

See more of : twilight, Robert Pattinson, Liberty Ross

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"This momentary indiscretion has jeopardized the most important thing in my life, the person I love and respect the most, Rob. I love him, I love him, I'm so sorry," she had said.

See more of : twilight, Rupert Sanders, Robert Pattinson, Liberty Ross