Actress Scarlett Johansson says wearing heavy costumes in her upcoming superhero movie The Avengers was not an easy task for her, and made her feel like a little kid. \"It felt like being a little kid. When each scene ended, all our costumes were unzipped and some air conditioning venting unit goes in. It was like playing dress-up to the extreme,\" showbizspy.com quoted Johansson as saying. \"Someone is having a wig removed. We all had our various things that we have to do to get comfortable. Everybody looked incredibly uncomfortable until the cameras are rolling and then we all look [like heroes]. Then ‘Cut!\' and we\'re all like, ‘Arrrgh... God, this thing, get it off me, it\'s awful\',\" she said.