Ekaterina Alekseeva, also known by aliases such as Sandra A and Penina, is a Russian former adult model and pornographic actress. Born on October 28, 1984, in the Russian Federation, she began her career in the adult entertainment industry around 2007 at the age of 22 and remained active until 2019. Standing at 175 cm tall and weighing approximately 51 kg, she is recognized for her slender build with measurements of 86A-61-91, natural small breasts, blue eyes, and hair often styled as blonde or auburn.
Of Caucasian ethnicity, Alekseeva appeared in numerous photo galleries and video scenes across solo, lesbian, and hardcore genres, featured on major adult platforms. Her work contributed to the popularity of Russian performers in the MILF and adult modeling categories. Following her retirement after 12 years in the industry, she has maintained a low public profile, focusing on a private life away from the spotlight.