Khloe Kardashian still calls Caitlyn Jenner, Bruce.

The 'Keeping Up with the Kardashians' star shared that despite her transition into Caitlyn, herself and sisters - Kim Kardashian West, Kourtney Kardashian, Kylie Jenner and Kendall Jenner - call him Bruce because ''when she calls me, it's the same voice as Bruce.''

She said: ''We, my sisters and I, we will call Caitlyn ''Bruce'' and we've been told that's completely fine. We are allowed to call her any name we want to. Because on the phone, when she calls me, it's the same voice as Bruce. And if I'm not physically with her, it's hard to remember in the moment that I'm talking to Caitlyn, if that makes sense.''

The clothes designer also admitted how it ''was a hard time for the entire family, what we were all transitioning with her, with an audience'' which she thinks is ''not really normal''.

She told The Project: ''But I think there was a hard time for the entire family, that we were all transitioning with her, but in front of an audience, I think that's not really the normal way to go about it, you know.There is a lot of raw emotions, that it's hard to do in front of a camera.''

However, now they have put it ''all behind us now'' Khloe says she ''just wants her to be happy''.

She added: ''And I think, we all got through it and that's completely over, it's all behind us now. So we are just happy for her. We just want her to be happy.''