Updated

The sibling rivalry is strong between Serena and Venus Williams -- but not on the tennis court!

Serena took to Snapchat on Wednesday to jokingly hate on her sister's figure-hugging ensemble.

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"Diva," Serena wrote alongside one snap of her sister walking through the aisles during the pair's shopping trip, showing off her chic black-and-tan outfit, before making her objection to the look clear.

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"Trying to make her bigger lol," she captioned another shot of Venus, 36, casually posing at home, drawing red lines around her hips.

"She is so thin and I hate her. #jealous," Serena confessed alongside a photo of Venus slipping on her fierce boots.

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While Serena poked fun at her big sis on Wednesday, there's really nothing but love between the two.

In fact, the 35-year-old tennis star thanked Venus after beating her in the finals��of the 2017 Australian Open last month.

"I really would like to take this moment to congratulate Venus," Serena gushed. "She's an amazing person. There's no way I would be at 23 without her. There's no way I would be at one without her. There's no way I would have anything without her."

"She's my inspiration," she added.

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