Between 1718 and 1721 the trompe-l'œil altars of St. Casimir and Virgin Mary were sponsored by Michał Kazimierz Radziwiłł, voivode of Vilnius. In 1718 the church furnishing was completed with a profuse late baroque pulpit in the shape of a flower and between 1745 and 1748 with a rococo organ. The significant additions in the second half of the 18th century were tombstones of the members of the Sobieski family - Maria Karolina Sobieska de Bouillon (the granddaughter of John III of Poland) and Maria Józefa Sobieska. In 1769, the former 17th century tabernacle was replaced with a new marble one decorated with silver. During the Kościuszko Uprising the nuns donated some of the church equipment to the army - 12 silver candlesticks from Augsburg, 5 gilded reliquaries, 52 precious votives and 4 statues of angels from the main altar - 412 silver grzywnas worth.