Hard at work on her latest project, Catherine Zeta Jones was spotted on the Miami, Florida set of "Rock of Ages" on Tuesday (August 9).

The 41-year-old actress, who plays the mayor's wife in the drama/comedy, showed off her leggy good looks as she filmed scenes in the southern locale, wearing a flowing blue dress and heeled flip-flops.

Meanwhile, in personal news, Catherine is reportedly trying to kick her smoking habit following her husband Michael Douglas' terrifying bout with throat cancer last year.

According to OK! magazine, since Douglas' recovery from the disease, Zeta-Jones' efforts to quit have increased - using an electric version of a cigarette as a tobacco-free replacement for the past three months.

Enjoy the pictures of Catherine Zeta Jones on the set of "Rock of Ages 2" (August 9).