Sienna Miller's New Year's resolution to quit smoking lasted less than 48 hours.
The 'Factory Girl' actress is often photographed smoking, and her vow to quit the nicotine sticks has been less successful this year than ever before.
A source close to the star told Britain's Daily Express newspaper: "Sienna makes the same promise every year and breaks the same promise every year. This year she's broken her record for her shortest ever time as a quitter, as she lasted less than 48 hours.
"She blames stress and needing something to do with her hands as the reasons she just can't kick the habit."
Meanwhile, the 26-year-old actress is reportedly engaged to her Welsh boyfriend, 'Notting Hill' actor Rhys Ifans, after he proposed on her birthday.
A source close to the couple said: "Rhys and Sienna officially got engaged on Sienna's birthday after spending Christmas together in Wales. He had a Welsh designer make a special ring just for her."
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