Based on available information about Taylor Swift’s homes and her public persona, there is no evidence that she has a "doll immersive" room where she has breakfast with a doll collection. 

This rumor likely stems from a combination of: 

The "Lover House" concept: Swift's Lover era featured a dollhouse-like structure representing her albums, which fans often recreate as physical dollhouses. 

"Whimsically Girlie" decor: Early descriptions of her Nashville penthouse included this description, which some fans interpreted as having doll-like elements.

 Celebrity memorabilia: 

While she has a collection of iconic, high-end items in her homes—including a Stevie Nicks Barbie doll gifted to her—these are displayed as memorabilia, not as part of an immersive, breakfast-time toy setting.

  The search results show that "Taylor Swift doll rooms" are popular DIY projects created by fans (Swifties) rather than rooms in Swift's actual homes.