Pregnant Miller takes up yoga

London, May 5 (IANS) Pregnant actress Sienna Miller has taken up yoga to remain fit.

The actress is expecting her first child with fiance Tom Sturridge, and she hates working out in gym.

"I have been trying to do some pregnancy yoga as I'm definitely not a gym person," contactmusic.com quoted Miller as saying.

"My mum started up one of the first yoga schools in London in the 70s, so I should probably utilise her expertise as I have really bad posture. But I think I'd probably kill her if she tried to tell me to sit up straight," she added.

The 30-year-old says she has seen a notable difference in her skin ever since she became pregnant. But she is unsure if it is because she has quit smoking and alcohol.

"My skin definitely looks better since I became pregnant although not smoking or drinking has probably helped with that," she said.