Nicole Kidman theory alleges that she's secretly 'bald'

There's a theory going around that Nicole Kidman is secretly ... bald?

In case you haven't noticed, the actress almost exclusively wears wigs during her on-screen roles these days -- and has for years. There's the bang-heavy look she donned for her Emmy-winning role in Big Little Lies, the lengthy blonde wig she wore in Aquaman, the curly grey 'do for Top Of The Lake and the severe bob from Paddington, just to name a few, but the list goes on.

Though the actress likely simply wears wigs to expertly get fully into character for each role that she plays, some people think that she only wears wigs in movies because she's hiding something.

During a recent episode of their What's The Tee podcast, for example, RuPaul and Michelle Visage proclaimed that "absolutely nobody does wigs like Nicole, which they found ironic because Visage recently saw an advertisement of Kidman "selling a hair pill" at an airport in Australia (Swisse, which is a supplement brand that Kidman is an ambassador for).

"The irony is that we rarely ever see Nicole Kidman's hair," RuPaul explained, before Visage proclaimed, "I think she's bald!"

"She's not bald!" RuPaul replied. "She's just got curly hair that ends up being very brittle."

The RuPaul's Drag Race host is correct in saying that: Kidman frequently sports her real hair on red carpets and when spotted out and about by the paparazzi, though it's usually straightened on red carpet events. That being said, she very rarely shows off her natural hair in movies.

Adding fuel to the fire is the fact that the Oscar-winning actress has famously been sensitive about answering questions about the wigs she chooses to wear for certain roles. In March of this year, Kidman abruptly hung up and ended a radio interview on The Kyle and Jackie O Show when she was pressed about which wig was her favourite.

"I see it as necessary for the character to be authentic," Kidman said when asked about getting "uglied up" for her recent movie, Destroyer.

"I think a guy asked you about this as a press conference," Jackie O asked later in the interview. "It did make me wonder, what is your favourite wig?"

"Well, I'm using my own hair now, so I think that's probably my favourite," Kidman replied.

"Are you?" the radio host responded.

"Yeah, there's many times where I use my own hair as well because it's so easy, and then other times I'm creating different characters. It's like asking, 'Do you have a favourite child?' Can't answer that one," Kidman responded, before suddenly wrapping up the interview. "Anyway, I've gotta go, because they're waiting at the other radio station, which I'd better not say on your show."

The interview came several months after, during a Q&A for Destroyer in September 2018, Kidman called a question about her favourite wig an "awful question".