Big Sister

"Big Sisters" is the third episode of the seventh season and revival of the American animated superhero comedy television series The Powerpuff Girls, and the 139th episode overall of the entire series. The episode airs on Cartoon Network on March 11, 2019.

The episode focuses on Blossom and Buttercup competing in overeating after Buttercup ate a bag of chips which had been Blossom's bag.

Plot
At the Utonium residence, Blossom heads to the bathroom when suddenly, she finds it empty upon getting back. Buttercup was responsible for eating her chips, so in retaliation, she eats Buttercup's limited edition bag of Cheese Munchies. Bubbles tries to dissolve the problem, her sisters tell her to butt out. Blossom still takes and eats Buttercup's food in spite of Buttercup eating her chips. Refusing to apologize, they decide to keep eyes on each other to prevent from getting each other's food.

Two weeks go by and Blossom and Buttercup have become morbidly obese and are still at it at fighting over their food. As Bubbles gets noted that Princess Morbucks has robbed the Bobbin Brothers Jewelry Store, they rush down there and face off with her. Amused by Blossom and Buttercup's now morbid bodies, the two threaten to sit on her, causing her to fly off in terror from their threat, dropping the bag of jewels in the process. As Bubbles returns the jewels, her sisters unfortunately loose her due to their girth.

The Professor catches on to their eating habits, so he brings them to the lab to test their strength and powers, in which fail, leading to the Professor putting them on a diet. In shock, the two try to persuade him into change his mind. Suddenly, the hotline rings and they get the memo that Morbucks is in possession of the museum's priceless diamond, so the two girls go after her alone. On a skyscraper, they encounter her and successfully defeat her before she could get away.

On the following day, Blossom and Buttercup are at a gym losing weight. Buttercup finally apologizes to Blossom, who then rips her pants from struggling to lift a weight, much to her embarrassment.