In a GIF: Pregnant Serena arrives at Roland Garros, watches Venus roll

On—and just off of—Court Philippe Chatrier, the Williams sisters demanded our attention on Wednesday. Venus, wearing a stylish number from her EleVen collection, ran through her second-round opponent, Kurumi Nara, 6-3, 6-1.

"I just tried to step it up," the 36-year-old told Tennis Channel's Jon Wertheim after the match. "She played some amazing games in the beginning—it was hard to get a ball past her. I was happy to kind of figure that out."

And then there was Serena—wearing a stylish outfit herself—taking it all in, with child on the way, from the sidelines:

The fashionably late 23-time Grand Slam singles champion arrived midway through the first set, causing a stir amongst the Parisian patrons. Venus knew she was coming, of course, but didn't realize it at the time.

"I never look up to my box that much," Venus said. "I did see her at some point, but I don't remember when it was.

"There was a lot of stuff going on, on the court—I was like, focus on what's here."

This year's French Open marks the first time in more than five years that Venus has competed in a major without Serena also in the draw. At Roland Garros, courtside support will have to suffice, but according to Venus, both Williams sisters want to resume tennis' greatest sister act at the Slams.

"Her plan is to be out there with me again," Venus said, "and my plan is to stay around a little bit."

Tennis Channel's Daily Serve recaps Day 4 at Roland Garros:

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