Serena Williams Strips Down For Australian Lingerie Brand Berlei

World No. 1 Serena Williams stripped down for Australian brand Berlei. Williams flaunted her well-toned physique and curves in a new TV commercial for the said lingerie brand.

Mail Online has obtained some snaps during Williams' shoot for Berlei. Williams did a series of photo shoots to showcase Berlei's underwear sets. Williams also had a commercial shoot in Miami for the lingerie brand.

In one photo, Williams was wearing a black bra and a black girdle with a coat draped over her shoulders. In another photo, Williams donned a pair of gray skin-tight leggings and gray sports bra. She further showed off her curves in striped figure-hugging skirt matched with Berlie's white sports bra.

According to the British webloid, Williams' Berlei commercial will be aired just in time for the American's appearance at the 2015 Australian Open. Williams reportedly became Berlei's ambassador in 2013.

Berlei's Senior Marketing Manager Kelly Warwick told Mail Online Australia that Williams was a natural during the commercial shoot. "She is such a professional," Warwick lamented.

Williams, apparently, has always been a fan of Berlie, The Daily Telegraph Australia reports. The brand was introduced to her by her mother Oracene Price, who bought a Berlei bra during one of her visits in Australia.

"I've been a fan of Berlei long before I started working with the brand," Williams said. "My mom discovered the brand in Myer on a trip to Australia 10 years ago and I have been wearing the sports bra ever since."

Williams said stripping down for Berlei has never been an issue for her. She admitted that she sometimes feels conscious about herself, but she has learned to be comfortable in her own skin and just be proud of what she has. No matter what everyone says, what is important is that people feel good about themselves and pay no attention to what others tell them, the top-ranked female athlete said.

It wouldn't be the first time for Williams to strip down to her undies. Aside from sharing pictures of her in sexy swimsuits on social media, Williams has posed in various magazines. She even posed nude for ESPN The Magazine.