Johansson desperate to start a family

Scarlett Johansson is desperate to start a family with husband Ryan Reynolds, according to reports.

The Lost In Translation actress is apparently keen to be a young mother and is looking at the best time to conceive.

"Scarlett and Ryan are madly in love and want to start a family sooner rather than later," a source told the Chicago Sun Times.

"Scarlett is keen to be a young mum and does not plan to be the sort of women who leaves motherhood too late and starts worrying about her biological clock ticking."

Johansson and Reynolds married at a wilderness resort in Canada in September.