Aaahh Belinda (2023) is a Turkish movie directed by Deniz Yorulmazer.
It stars Neslihan Atagül as Dilara/Handan. The fact that she has two names is the key to the plot. Dilara is a supermodel, who is shooting a commercial for the shampoo Belinda. The shampoo company wants to attract buyers by not just having a model who is taking a shower, but by putting her into an imaginary family. Suddenly, Dilara realizes that she is living in the world of Handan, the name of the wife of the imaginary family.
The problem is that it is, indeed, a real family. Dilara knows that it's not, but no one--including her husband--will believe her.
Neslihan Atagül is, of course, very beautiful. Her role requires her to be beautiful--she's a supermodel. She's also a good actor. The plot has been done before, but it's still enjoyable to see how it will play out.
Aaahh Belinda has a terrible IMDb rating of 5.3. It's not that bad. In fact, I liked it and rated it 8.