In some photographs from the film's set, the 38-year-old is seen sitting on hair and make-up chair while flaunting her new hairstyle, reports dailymail.co.uk.

Wanting to keep her new cut a secret ahead of her upcoming film, which will be directed by singer Sia, Hudson has been donning a number of convincing wigs in the past few weeks. 

Hudson, 38, and her boyfriend were spotted having a make-out session on Saturday, reports dailymail.co.uk.

Hudson was seen wearing flared jeans and boots with a white top and a pair of mirrored shades.

She carried her son's hoodie, keeping it wrapped around her face for much of the outing, possibly in an attempt to go unrecognised.

This was not the first time when Hudson was spotted kissing Fujikawa in public. The two were earlier caught smooching in late March.

The couple made their red carpet debut together at the premiere of Hudson's mother Goldie Hawn's new movie "Snatched" earlier this month.

The 71-year-old says she would love to work with Hudson but believes that it would come with "too much baggage", reports latimes.com.

"We would love it, but it's really interesting - unless it's something great, honey, you don't do it. And I'll tell you another thing: mother and daughter, or son or whatever - sometimes it doesn't work. You have to look at the reality, because we're very well known apart. There's a lot of expectation coming into it. You want to talk about baggage," Hawn said.