The Bridgerton train continues to roll on! The long-awaited and record-breaking third season premiered its first half in May and its second half in June. Following this, Netflix didn't waste much time before rolling out news about Season 4.

This started with the announcement in July that Benedict (Luke Thompson) will be the Bridgerton sibling starring in Season 4.

Each season follows a different sibling's love story. Daphne (Phoebe Dynevor) was the Season 1 focus, followed by Anthony (Jonathan Bailey) in Season 2, and, most recently, Colin (Luke Newton) in Season 3.

Then, earlier this month, Netflix announced that Yerin Ha will play Benedict's love interest, Sophie Baek.

Now, Netflix is announcing three additional actors joining the series, and Harry Potter fans will recognize one of them.

On Monday, the streamer revealed that Katie Leung was cast as Lady Araminta Gun. Netflix's Tudum described the character as a "twice-married and twice-widowed" mother of two who is debuting her daughters in the new season and is determined to see one of them married. "Fabulous, discerning, and blunt, Araminta does not respond well when anything — or anyone — threatens her standing in society," Tudum continued.

Katie notably played Cho Chang in the Harry Potter films, beginning with Goblet of Fire in 2005. She then appeared in the following two films, Order of the Phoenix and Half-Blood Prince, as well as the final movie, Deathly Hallows — Part 2.

The two other cast members announced on Monday will play Araminta's daughters. Michelle Mao was cast as Rosamund Li, the eldest daughter. Tudum described Rosamund as "beautiful, vain, and eager to please her mother" and said she has her eye on Benedict.

Isabella Wei was cast as Rosamund's younger sister, Posy Li. Netflix described Posy as "kinder" than Rosamund with a "chatty, overly friendly demeanor," though her mother overlooks her.

Katie celebrated the casting announcements on Instagram, saying, "Buzzin' for me and my girls ????????♀️????????♀️????????♀️."