"I actually let the part go, because I met with [director Jon M. Chu] and I was like, 'I really want to do this, but I can't, because I'm under contract with my show and we shoot in the fall, '" she told the audience, according to Us Weekly.
Released in the aptly-called "Asian August", "Crazy Rich Asians" grossed $26.5 million on its opening weekend at the USA box office.
Wu also went on to reveal that she's unsure at present whether the sequel will incorporate material from the next two books in author Kevin Kwan's series, China Rich Girlfriend and Rich People Problems.
It has also become the most successful Hollywood studio romantic comedy in nine years after finishing Labor Day with $117 million.
A "Crazy Rich Asians" sequel is happening, but we're all going to have to wait.
On a related note, Crazy Rich Asians writer Adele Lim and Peter Chiarelli will return for the second installment of the movie along with director Jon M Chu.
New Yorker Rachel Chu (Constance Wu) receives an invitation from her boyfriend Nick Young (Henry Golding) to his best friend's wedding in Singapore.
While Wu will not be back for a "crazy rich" sequel soon, she is considering a role in the upcoming Jennifer Lopez movie "Hustlers". So, she made a decision to email to the director saying, "Listen, I know the schedules don't work out, whoever you end up putting in the movie".