Anastacia Marie Argentova-Stevens was 5 when she was last seen on April 23, 2003, in Pembroke Pines, Florida. The case is a parental abduction: her non-custodial mother, Viktoriya Argentova (known as Vika and possibly using the alias Victoria), is wanted on a felony kidnapping warrant issued April 30, 2003. Investigators believe Viktoriya and Anastacia may have traveled to Moscow, Russia.

At the time of the abduction Anastacia had blonde hair, blue eyes, pierced ears, stood about 4 feet tall and weighed around 52 pounds. Her last known outfit was a blue t-shirt and tan pants. Age-progressed images have been released over the years; the most recent shows what she might look like at 25.

The Pembroke Pines Police Department continues to seek information about Anastacia and her mother. If anyone has seen them or can help establish their whereabouts, please come forward.