Kanye West says his soul is "affected" when his wife Kim Kardashian looks too sexy.

The rapper was seen voicing his concerns about Kim's eye-watering Met Gala look on last night's episode of Keeping Up With The Kardashians.

The mum-of-four, 38, had to wear an extreme corset for her Costume Institute Gala look - created by Thierry Mugler - and said if she needs to pee she'd had to wet herself and have one of her sisters wipe her leg.

But seemingly that was the last of Kanye's concerns.

The couple ended up arguing over Kim's look, and she was left riddled with "anxiety", especially as her look was going to see her land her first solo US Vogue cover.

Kanye, 42, frowned when he saw Kim's dress and told her it didn't match with his personal evolution.

He told her: "I just made this transition from being a rapper, looking at all these girls, looking at my wife. Like, 'Oh, my girl needs to be like the other girls, showing her body off'.

"I didn't realise that that was affecting my soul and my spirit as someone that's married and loved, and the father of now, what - about to be four kids?'

The argument took place before the couple welcomed their fourth child, Psalm, via surrogate.

Kanye said: "A corset is like a form of underwear. It's hot. It's like, it's hot for who, though?"

But Kim wasn't happy with his 11th-hour criticisms.

She said: "So the night before the Met, you're gonna come in here and say that you're not into a corset bust? I'm getting really bad anxiety. What are you talking about?

"I don't need any more negative energy for you to now say that you're not into me in a tight dress."

Kanye fired back: "You are my wife, and it affects me when pictures are too sexy."

And Kim tells her husband it's because of him she has the confidence to dress the way she does.

She says: "You built me up to be this sexy person and confidence and all this stuff.

"And just because you're on a journey and you're on a transformation doesn't mean that I'm in the same spot with you."

Kanye left after telling Kim: "All right, cool."

And Kim responds: "That's absolutely ridiculous."