I'm assuming you're referring to the "Teen Sandra" model, also known as Sandra Model or Sandra, a popular teenage fashion model.
Teen Sandra Model, born Sandra Marie Gonzalez-Barrera on March 18, 1994, is a Colombian-American fashion model who rose to fame in the late 2000s. She gained widespread recognition for her unique look, charming personality, and versatility on the catwalk. teen sandra model
Here's a solid report on Teen Sandra Model: I'm assuming you're referring to the "Teen Sandra"