Anastasiia is a representative of the Kyiv football school. In 2018, she took first spot in the Kyiv EmPowerGirls championship. Sikorska signed her first professional contract in 2020 with local Ateks, where she spent two seasons and became a silver medallist of the First League. In the summer of 2022, she joined Dynamo, making 40 apps in the Vyshcha League. Anastasiia moved to Shakhtar in the summer of 2024 and immediately established herself in the starting eleven. She covers a lot of ground on the flank, carries the ball forward and looks to create attacking opportunities.