But Marvel makes sure the actors are kept hydrated and cool, says the British actress, 28.

They had one tube with cold water connected to this crop top.

It kind of made my back feel like it was peeing itself.

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Ben Rothstein/©Marvel Studios 2018

I went, Well, great,' she says.

Lets start from scratch!'

John-Kamen had sci-fi cred even before joining the MCU.

Wed sing show tunes in between takes.Singin in the Rain,Guys and Dolls.

It was very fun, she says of the latter.

Speaking of singing, John-Kamen also starred in the Spice Girls musicalViva Forever!in London in 2012.

The Spice Girls were my life growing up, she says.

My birthday was Spice Girls-inspired.

I actually got to meet them.

That was really wonderful.

Each of themaretheir persona.

Shes currently shooting season 5 ofKilljoys.

I think weve added some swear words, she says.

Its our last season, so what the hell?

Watch John-KamensAnt-Man and the Waspcostar Evangeline Lilly talk about the superhero sequel, above.