Scarlett Johansson thinks her striking good looks are a ''by-product of being curvy''.

The 'Avengers Assemble' actress - who plays spy Black Widow the superhero movie - finds her own sexuality ''boring'' and she tries not to think about it.

When asked how she feels about her looks, the blonde beauty - who has been dating advertising creative director Nate Taylor for six months - said: ''I think that's just a by-product of being curvy. I never think about it, except when I get constant questions in interviews about sexuality. I really have nothing to say about any of that stuff because it's so boring.''

Scarlett had to wear a skin-tight catsuit to portray Black Widow role in the Marvel film - in which she stars alongside Robert Downey Jr., Mark Ruffalo, Chris Hemsworth and Chris Evans - but she preferred to explore her character's ''dark past'' than her alter-ego's sexual power.

She added to the Daily Mirror newspaper: ''A lot of the time these superheroine characters are relying on their sexuality and being posy and sexy as opposed to being a badass.

''Those characters are so silly and I don't have anything to contribute to that. But my character, Black Widow, has this dark past, so why not celebrate that?

''When I met with Marvel they agreed that there's not really been a good female superhero movie and they wanted to get away from that overly sexy superheroine thing.''