Tennis star-Serena Williams is looking banging on the cover of April 2015’s VOGUE—and the beauty is not with just her appearance, but also what she talks about inside the magazine.

In the magazine, Serena opens up about her friendship with tennis rival-Caroline Wozniacki, her relationship with her sister and how she pushed herself to be more forgiving.

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“My phone was going crazy,” Wozniacki remembers. “But I didn’t want to talk to anyone.” Most people got the message and stopped trying. But Serena Williams isn’t most people.

“I kept calling,” Williams says unapologetically.

Wozniacki smiles at the memory. “First she texted, ‘If you don’t pick up, I am going to fly to Monaco.’ And then, ‘If you don’t answer the door, I am going to knock it down.’ So I thought, OK, I better answer the phone. And I am so glad I did. She wasn’t pitying me, like a lot of people were. I mean, it’s not like anyone died. I was in shock, but she was really helpful because she had been through it before. She didn’t sugarcoat it, and she didn’t look down on me. She was really there for me when I needed her the most, and that’s why I think our friendship is so strong now.”

“I was impressed with how strong she was,” Williams says. “And you know, there will be other engagement parties.” She pauses a beat. “Many.”

“Let’s just put an end to this myth that women players cannot be friends,” Williams says. “We can!”