A set of 4-year-olds who are convinced they’re twins are stealing millions of hearts across the country.

Jia Sarnicola and Zuri Copeland of Miami met at school and became fast friends. Their June birthdays are days apart, and this year, they celebrated with a combined party. Now, they proudly proclaim they’re twins.

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“They have very strong personalities and are both super outgoing, well-spoken, intelligent, and not afraid to tell you what they want. They hit it off right away,” said Jia’s mom Ashley Riggs Sarnicola told ABC News.

Zuri’s mom agreed.

“It is unbelievable. They connected very well immediately,” mom Valencia Copeland said. “It was amazing how they’ve gelled together.”

Jia is blonde and Caucasian, and Zuri has black hair and is African American.

“They don’t see color. We’ve never talked to them about it, period,” said Sarnicola.

Photos shared to Instagram show both girls’ families enjoying outings together, like concerts and playdates.

On Facebook, Sarnicola shared a story about an incident that happened at a recent birthday party that proved the strength of the girls’ bond.

Sarnicola explained that Jia started crying because a little girl told her that she and Zuri weren’t really twins.

Jia quickly told her, “You don’t know anything because we have the same birthday and the same soul,” Sarnicola wrote on Facebook. “When she said that, it took me aback. It was so sweet.”