Jaelyn Valencia was born at 11:59 p.m. New Year's Eve at San Diego Kaiser Permanente Zion Medical Center in Mission Valley, California. Jaelyn's little brother, Luis, arrived at 12:02 a.m. New Year's Day, CBS8.com reported.

Jaelyn weighed in at 4 pounds, 15 ounces. Her brother Luis weighed a little bit more at 5 pounds, 9 ounces.

The newborns are said to be happy and healthy.

The twins' mother, Maribel, works as a cashier at San Diego International Airport, while her husband Luis is a Navy diesel mechanic.

The couple have another daughter, Isabella, who is 3 years old.