People who in your head are the same person (when they are not)

[AuntieBiotics]

Actors, sports people, celebrities who you get muddled up or just can't differentiate between.

Prompted because I have just 3 minutes ago realised the the actors Katherine Parkinson and Kerry Godliman are not the same person.

Also, Suranne Jones and Keeley Hawes.

All the British actors called Tom H... (Holland, Hiddleston, Hardy) - I can never remember which is which.