Melbourne, Australia ? Serena Slam or Sister Slam — no matter what you call it, Serena Williams truly is grand.

Williams survived an error-filled match to beat elder sister Venus, 7-6 (4), 3-6, 6-4, today to win the Australian Open for her fourth straight major championship.

Serena added another Grand Slam title to the French Open, U.S. Open and Wimbledon crowns she won last year, all against her sister.

After Venus slumped through four straight errors in the final game, the sisters met at the net to put their arms around each other and whisper in each other’s ears. While Serena blew kisses to the crowd, Venus applauded with her racket.

“I never get choked up, but I’m really emotional right now,” Serena said during the trophy ceremony.

On the verge of tears, she added: “I’m really, really, really happy. I’d like to thank my mom and my dad for helping me.”

Venus, who at 22 is 15 months older than Serena, gave her sister more of a test this time.

Venus served for the first set but couldn’t close it out. She did win the second set, however, after being swept in their previous three matchups.

“I wish I could have been the winner, but of course you have a great champion in Serena and she has won all four Grand Slams, which is something I’d love to do one day,” Venus said. “So, yeah, I’d kind of like to be just like her.”

Serena now holds a 5-4 career edge over Venus in major titles and also owns a 6-5 lead in head-to-head matches. Serena collected $654,000 for this victory and Venus won $327,000.

This marked the sixth time a woman has held all four of tennis’ major championships at the same time, and the first since Steffi Graf in 1994.

It might not be a true Grand Slam — tennis purists demand that a player collect all four major titles in a single calendar year — but the accomplishment is rare.

And to do it, Serena had to beat her sister, best friend and practice partner each time. The Williams siblings are the first two women in Grand Slam history to square off in four consecutive finals.