Elizabeth Olsen loves her 'Avengers: Age of Ultron' secrecy cloak.

The 24-year-old star has joined the hugely anticipated superhero sequel as Scarlet Witch and is pleased the ''hood and robe'' of her costume help cover up her figure.

She told Total Film magazine: ''We've done some costume stuff, yeah.

''My favourite piece is my secrecy cloak that prevents anyone from seeing what I'm wearing. There's a hood, and a robe - it protects the image.''

The actress revealed director Joss Whedon didn't want her to wear the typical outfits which are depicted in Marvel comics, which is where the superhero team originates from and thinks they can only look good on athletes or models who have lean figures.

Olsen continued: ''I don't think Joss ever would have hired me, honestly, if he wanted me to wear those [comic book] outfits. I am not a professional athlete and nor am I a model. Wearing those costumes wouldn't be fun for anyone who wasn't those things.''

The brunette beauty says Whedon has a ''different'' idea of how to portray his screen characters by comparison to the comics, and Olsen insists his depiction is ''respectful''.

The starlet added: ''He already had a different idea. It respects and involves the comic-book character but it's different, more rooted. It's for someone today... If someone walked around wearing what she wore in the comics, people would stop and say, 'What the hell ... she thinks she's a superhero!'''