Katie Leung, known for her role as Cho Chang in the 'Harry Potter' series, will join the cast of Netflix's 'Bridgerton' for its fourth season, playing the antagonist Lady Araminta Gun. Araminta is described as a twice-married and twice-widowed woman with two daughters, Rosamund and Posy, who are set to enter the marriage market. The upcoming season will focus on the romantic journey of Benedict Bridgerton, who falls for a mysterious masked woman at a ball, and is inspired by Julia Quinn's novel 'An Offer from a Gentleman'. Leung's character is portrayed as fabulous and discerning, determined to secure a suitable match for her daughters, particularly targeting Benedict. The new season aims to explore themes of romance and reality, blending traditional fairy tale elements with contemporary storytelling. The release date for the season is yet to be announced.