Eyes on fashion in Australia

The players are unveiling their looks for the Australian Open. Here's what's been making waves in the fashion stakes.

1. Backless is more: Serena Williams showed off some revealing wear, saying the Nike design related to "the back and strength and women and power."

"We wanted to look at my back all year, so all year you'll be seeing my back," she said on court, later adding that she has to watch her figure while wearing it. "I feel like I don't want to eat too much," she said.

The dress earned compliments from fellow players (who also happen to wear the clothing brand).

2. Tightier whities: The company's clothes for the guys also have been attracting attention, especially their move away from the baggy look of recent years. It has the approval of their most prominent, uh, bottom half. Rafael Nadal, also decked in a pink top, is happy with the tighter wear.

"To make the shorts shorter is something that I like. I feel more comfortable this way. We make it shorter already last year, and this year a little bit more," he said.

3. Neo neon: Among the younger set, Australia's Thanasi Kokkinakis shone in the first round -- not just for his win against Ernests Gulbis, but also his bright yellow and pink speckled clothing, which had some recalling Andre Agassi. The teenager said that he had just agreed to wear what he had been shown.

"They gave me that package. They were like, 'We only give this to a few. If you're up for it, wear it.' I was like, 'Yeah, whatever, I'll do it,'" he said. "I wore the stripes last year, but that was nothing compared to what I wore this year."

Victory, though, makes anything look better. "I was like, surely in this outfit I've got to get the win," he quipped.

4. New logos: Some players are sporting different gear because they have switched clothing companies. Andy Murray (who now also has his own logo) is among them, wearing Under Armour for the first time this season. And there's a throwback making a comeback -- Ellesse, which once dressed Chris Evert, is getting into the game again by signing up Feliciano Lopez and Monica Puig.

5. High street: Though they're not usually associated with tennis or even sports, companies such as Uniqlo and H&M have been showing up on the courts in recent years. Tomas Berdych, who wears H&M, has become a conspicuous presence in the on-court fashion fiesta, sporting a referee-type shirt with blue stripes as well as a flowery polo that might have been better suited to a Hawaiian beach. But he's fine with people wondering what he might show up in next.

"That's nice. I think it's a good connection when people are getting kind of excited what's going to come next, what's going to be the next line," he said, having seen that it's good publicity for the company.

"For them it's very important. It's a fashion brand, it's not a sports brand at all. They trying to bring always something very special, something different to the courts as well. I actually really like it."

For this tournament, though, Berdych has been quite demure in a light blue V-shaped striped shirt.

6. Bringing sleeveless back: This once-modern look, seen on the likes of James Blake, Carlos Moya and Tommy Haas, has almost been consigned to the history books, but there's one veteran still carrying on the tradition. The 36-year-old Michael Russell qualified for the tournament and wore a sleeveless tank for his first-round match, showing some of the biggest guns on tour. The American had to put away the style when he switched clothing sponsors a couple of years back, but is now back to the look.

The locker room has noticed Russell's return to retro. ''There's been a few comments," he said.