A pair 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.

>> On HotTopics.TV: Biracial twins who went viral for their looks celebrate a very big milestone 

“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,” Jia’s mom, Ashley Riggs Sarnicola, told ABC News.

Zuri’s mom agreed.

>> Need something to lift your spirits? Read more uplifting news

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

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

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

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

Hugs everyone!

A post shared by Page Ran By Mom (@zuri_dynasty) on Jun 2, 2017 at 9:32am PDT

Fun times @kidzbop concert!

A post shared by Page Ran By Mom (@zuri_dynasty) on Aug 7, 2017 at 7:10pm PDT

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.

>> Read more trending news

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.”

Great Interview Today! stay tuned! #setlife #childmodel #fashion #zuri&jia

A post shared by Page Ran By Mom (@zuri_dynasty) on Nov 8, 2017 at 10:04am PST