Sienna Miller sporting stitches, black eye

Miller got injured after walking into a prop when the stage went dark during a weekend performance.

She made an appearance at Upper East Side eatery Serendipity 3 early this week with a huge gash on her face.

“(Sienna) entered the restaurant wearing a big pair of sunglasses, but when she took them off to greet the host, she was sporting a black eye and stitches. She took off her sunglasses and said, ‘Oh no, don’t look at me, don’t look at me’,” an onlooked said.