Serena Williams joins top seeds in making it safely through to second round of Australian Open

Serena Williams claims to suffer from nerves and jitters before her first-round matches at the grand slams.

The 18-time major winner has only once lost in the opening round at a grand slam tournament, and this is her 58th. One more grand slam title and she'll pass Chris Evert and Martina Navratilova on the all-time list of champions.

"If I could get to 19 in Australia that would be amazing," said the top-ranked Williams, who won the last of her five Australian titles in 2010.

Inevitably, with Williams - she played in a bright dress that revealed her lower back - there was the question on fashion.

It’s part of her plans to have fans and rivals looking at her back all year, although she thinks there might have to be some modifications if more order-in deliveries are allowed.

“I don’t know what’s allowed. A hamburger, French fries,” she said, “Yeah, I love eating pizza. I can’t have it this (tournament). I don’t want to break my dress.”

Wimbledon champion Petra Kvitova and number six Agnieszka Radwanska needed only 63 minutes for their straight-sets wins over Richel Hogenkamp and Kurumi Nara, and number 18 Venus Williams beat Maria Teresa Torro 6-2, 6-2.