The 27-year-old actress was walking her dog on the streets of West Village on Thursday morning when a paparazzi went up to her with questions about Law, New York Post reported.

Miller, who has been bugged with rumours of a rekindled romance with the British actor, apparently could not handle the stress any more and broke into tears.

"Just before she got home, she had an outburst, told the photographers to lay off and burst into tears," said a source.

The former couple is in the city for their New York Stage shows -- Law in 'Hamlet' and Miller in 'After Miss Julie', and has been seen enjoying nights out together, prompting rumours the romance is back on.

But Law's representative has denied reports of a re-union.