(Cover) - EN Showbiz - Sienna Miller is planning a "last hurrah trip" before her baby arrives.

The actress is currently pregnant with her first child. Sienna can't wait to become a mother and has decided to prepare for the change in her life by taking a holiday with her beau Tom Sturridge.

The 30-year-old is looking forward to a relaxing babymoon - the term given to a vacation taken by parents-to-be.

"Now that I'm pregnant, I've made sure my schedule is quiet. I've been doing a little bit of yoga and I want to take time to look after myself. I'm going on holiday soon, which will be lovely; it's a pre-baby, last hurrah trip," she told the latest UK issue of InStyle. "I'm in the mood for lying on a beach, reading a lot of books and a bit of culture. I like being able to walk into an old town and find good local food."

Sienna has reduced her workload in preparation for the new arrival.

She also revealed that her fashion designer sister has been happy to impart her wisdom on raising children.

"After that, I'll be at home, getting some sleep. My sister Savannah [who has two daughters, a son and a stepson], is a baby machine; she's an expert and, whether I want her advice or not, it's being given!" Sienna laughed.

Sienna and Tom are believed to be engaged. They started dating in mid-2011 following her split from actor Jude Law. (C) Cover Media