Sitting on her daddy David Beckham's lap to see the Los Angeles Dodgers take on the Chicago Cubs, the adorable two-year-old was far more interested in looking after her father.
Harper kept David entertained by feeding him the contents of her bag of sweets, emptying the packet into his mouth. At one point, she also decided to style his baseball cap in a different direction.
Harper's big brothers, Brooklyn, 14, Romeo, 10 and Cruz, eight were also at the game, and were considerably more interested in the action that their little sister. Hardworking mum Victoria Beckham was missing from the family outing.
She did come along for some family fun at Disneyland last week, as she and David treated their brood to a day out at the world-famous theme park.
Fashion designer Victoria, 39, recently insisted that her family are just like any other. "By the time Brooklyn's finally gone to bed, it's all I'm fit for," she told Vogue Australia. "Really we're much more normal than people think."
The Beckhams returned to London earlier this year after six years living in California. They frequently return to their second home, however, and just recently Victoria seemed to suggest that they could one day return.
"I am very career-minded, and I think my personality is more suited to America," she told the New York Times. "I am a working mother."
Already a fashion force to be reckoned with, Victoria also revealed her plans to become "bigger and bigger".
"I absolutely want an empire," she said.