Mariia Kosterina

Mariia Kosterina is an athlete from Russia who competes in the fitness model category of bodybuilding contests. In 2026, she participated in several professional IFBB events, placing 14th at the IFBB AGP Korea Pro Show, 13th at the IFBB Mr Big Evolution Pro, and 16th at the IFBB Musclecontest Japan Pro. In 2025, Mariia achieved significant success by winning the FIT MODEL category at multiple NPC Worldwide competitions, including the Oksana Grishina International Classic Pro Qualifier and the Regional Royal Cup, highlighting her strong competitive level and expertise in the discipline.