Eugenie Bouchard was spared any more controversial questions after booking her place in the fourth round of the Australian Open today.

Bouchard's previous win in Melbourne was followed by accusations of sexism being levelled at Tennis Australia commentator Ian Cohen, who asked the world No.7 to "give a twirl" to show off her outfit in an on-court interview.

Serena Williams had also been asked to do the same and 12-time grand slam singles winner Billie-Jean King wrote on Twitter: "The Australian Open interviewer asking the women to 'twirl' on court is out of line.

"This is truly sexist. If you ask the women, you have to ask the guys to twirl as well."

Tennis Australia did not immediately respond to requests to comment on Cohen's questions, but it was former Australian doubles specialist Todd Woodbridge who interviewed Bouchard following the 20-year-old Canadian's 7-5, 6-0 win over France's Caroline Garcia.

Woodbridge stuck strictly to tennis questions, asking Bouchard about the match, returning to Melbourne after reaching the semi-finals last year and her potential opponent in the last 16.

Bouchard had looked slightly bemused by the request to "give a twirl" following her second-round win over Kiki Bertens, admitting the question had taken her by surprise.

"It was very unexpected. I mean, yeah, I don't know. An old guy asking you to twirl, it was funny," she said.

"I think it was just kind of funny. You know, I'm fine with being asked to twirl if they ask the guys to flex their muscles and stuff.

"Personally I'm not offended. I think it was an in-the-moment thing and it was funny. But it's just funny how it's taken a life of its own. I'm just going to try to focus on my tennis."