Venus, The holly hot celebrity Serena Williams reach Wimbledon semifinals

Williams had her left leg taped up again but showed no weakness at all as she ripped 29 winners — compared to six for Radwanska — in a match that lasted just 68 minutes on a sunbaked Court 1.

"I can't complain," Williams said. "I'm in the semifinals of Wimbledon, right where I want to be. I just need to take another step forward."

With Venus looking on from the guest box, Serena swept through the first set against the eighth-ranked Azarenka in 26 minutes. After being broken to go down 3-2 in the second, she won four straight games and held serve at love to finish the match in commanding fashion. Serena had nine aces and 26 winners, with only seven unforced errors.

Serena Williams

Azarenka had beaten Serena in straight sets in their last match in the final at Key Biscayne, Fla., in April.

"I really wanted to do well today," Serena said. "I didn't do well the last time we played. I was not feeling great. I felt like I really wanted to show up today."

Asked whether she also felt unbeatable at Wimbledon, Serena said: "I don't feel invincible, but I definitely should have the same attitude. I'm going to try to feel that way, too."

Serena Williams nice

Only once in the last nine years has there been a Wimbledon women's final that didn't feature at least one of the Williams sisters. The sisters were the only two Grand Slam winners in the women's quarterfinals — Serena has 10 major titles and Venus seven.

The sisters have met in three Wimbledon finals, including last year. Serena has won two of the three, in 2002 and '03. They are 10-10 in career meetings.

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"I would love it to be a Williams final, and so would she," Venus said. "That would be great."

The sisters' father, Richard Williams, said he is certain his daughters will be in the final again.

Serena Williams smile

"I think they are both playing super well," he said. "They're playing the Williams way. And when you're playing the Williams way, it's very difficult for anyone to touch you."

Venus is trying to become the first woman since Steffi Graf in 1991-93 to win three Wimbledon titles in a row.

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Venus Williams raced to a 5-0 lead against Radwanska, and finished off the first set with back-to-back aces. Williams dropped only two of 18 points on serve in the set.

"That first set for me was almost perfect," Williams said.

Safina, who has risen to No. 1 in the world despite never having won a Grand Slam title, struggled against the 19-year-old Lisicki. The Russian had to come from behind after double-faulting to lose the first set tiebreaker, smashing her racket to the turf and drawing a warning from the chair umpire.