She claims we shouldn't be looping the string tie around our back and twisting at the front to keep our robes shut.
Instead she states we should be looping it through the front to then pull on both ends and tie without looping around our backs at all – claiming "you'll never wear one the same again".
The effect is a more cinched-in waist without the bulky belt at the back – and it has got lots of people asking questions.
"Surely getting it on and off will be much more difficult," one person said.
"I like the other way, it's easy to get on and off," another agreed.
While one woman said: "Problem is, you then have to drop it on the ground to get out of it. Nope, will continue the 'right' wrong way."
The woman says we should loop the belt around the front - not back. Photo / TikTok
Another argued: "Puts undue stress on the side loops. They will break quite soon."
Not everyone thought Megan's method was "complicated", with some calling her trick "flattering".
"OMG always wondered why mine always untied itself. So it wasn't my wonderful figure," one said.
"Love that it gives a tighter and smoother fit," another agreed.
"I learned this recently and my robe game is forever changed," someone else declared.
While one stunned user dramatically said: "I'm questioning every single decision I've made the last 20 years."
The secret is apparently in the loop direction. Photo / TikTok
"Wow, how did I not know this sooner," said one surprised user.
But perhaps the most interesting debate that raged on in the comments was about the name Megan gave her Barney purple dressing gown – calling it a "house coat".
