Venus Williams just accidentally dropped the gender of Serena's baby.

Her pregnancy was announced at 20 weeks by a casual Snapchat image, and now the gender of Serena Williams‘ baby has been revealed in an equally low-key manner by her sister, Venus Williams.

The news came on Wednesday when Venus Williams, who is currently competing at the 2017 French Open, was asked by a report what her sister’s baby is going to call her.

"She's going to call me 'favourite aunt,'" Venus replied nonchalantly before bringing her other sisters, Lyndrea Price and Isha Price into the conversation.

"We're all like, 'Baby V, baby Lyn, baby Isha," the tennis great continued before adding, "We all want the baby to be named after us."

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She's going to, Williams said before firing off a list of female-only names.

That's right, world. Another Williams woman is headed our way, and we cannot wait.

Serena, who is engaged to Reddit co-founder Alexis Ohanian, announced her pregnancy earlier this year when she shared an image of herself wearing a yellow swimsuit titled '20 weeks'.

But in April, the 35-year-old world champion admitted sharing the news had been a mistake.

"On social media, you press the wrong button and ... 30 minutes later I missed four calls and I’m like, 'That’s weird,'" she told Gayle King at a TED conference in April.

Watch: the moment Venus Williams gives away the gender of her sister's baby. Post continues... 

She continued, "I have this thing where I've been checking my status and taking pictures every week to see how far along I'm getting. I’ve been so good about it, but this was the one time it slipped."

As for whether or not Venus's news was a slip or not, we may never know, but either way, we're seriously excited.