Authentic Dirndl vs Amazon

Going to Oktoberfest in 2026 with my husband and in-laws. I just purchased an Amazon dirndl but my mother in law heard it is frowned upon to where a fake one and thinks I should return and purchase or rent when we get there. I feel like the one I picked does not look like a costume and could pass. What is Reddit’s thoughts.

https://drive.google.com/file/d/13KrxcIYQn2nwL2ELtfO2ApWloBiDKexN/view?usp=drivesdk

https://drive.google.com/file/d/1Pxb4Cf3t8pfjviQ84oRM\_GKvRB84t76w/view?usp=drivesdk

Keep or return?