Karla Monroig was born in Guayama, Puerto Rico, located on the southern coastal valley region of the island of Puerto Rico. Her father is of Catalan ancestry; her mother, is of Irish ancestry. She went to High school in a private school named ACADEMIA SAN ANTONIO located in her town. She went to college at the Universidad del Sagrado Corazón in Santurce, Puerto Rico, and has a college degree in Communications. In 1995, at the early age of 14, she was the first runner up, of Miss Borinquen Teenage pageant, and she was awarded with the Culture Award. In 1996, Monroig's interest in becoming a model arose, and she started taking modeling lessons in the Refine Institution of Modeling. She participated in the contest Cara de Imagen, (Face of Imagen Magazine), and was the first runner up once more.