Marta La Croft also known as Alexandra Sivroskya, is a Spanish adult model, Webcam model and porn star. She currently lives in Barcelona were she, according to her Cumlouder profile page works as a personal trainer. She used to be an active competitor in fitness and figure competitions.

Starting from 2013, her life and porn career have been documented by the Barcelona-based photographer Katia Repina in a series titled Llámame Marta.

Measurements: 34F-24-36

Height: 1.68 m

Weight: 58 kg