Members of 2NE1, including Sandara Park, CL, and Minzy, attended BIGBANG's 20th anniversary world tour concert on the 23rd. They participated in the 'BIGBANG 2026-2027 WORLD TOUR "XX : COSMOS"' held at the Goyang Sports Complex Main Stadium from the 21st to the 23rd. Sandara Park held a BIGBANG light stick and smiled brightly, displaying their enduring friendship with BIGBANG members including G-Dragon through playful expressions. Sandara Park posted several photos on Instagram with the text 'BIG BANG' along with crown emojis. However, fellow 2NE1 member Park Bom was notably absent from the photos. This concert marks BIGBANG's first solo concert in approximately 9 years since 'LAST DANCE' in 2017, and the reunion of the two groups that worked together under YG Entertainment for many years captured fans' attention.