Helena, who is known for her eccentric style and lives with one of the world's most quirky film directors, said behind closed doors of their home they are just normal.
The 44-year-old, who lives with Tim and their daughter Nell, two, and son Billy, seven, told British Psychologies magazine: 'I'm sure it's because I'm with Tim Burton. He looks weird, apparently. We don't comb our hair. And everyone thinks we live in a weird house with an underground tunnel and our children live down the road.
'There are so many myths about us but the reality is nothing more interesting than two houses knocked together.'
She added: 'I feel utterly conventional but, apparently, I'm not. I suppose a lot of actresses wear what I call 'glass of milk' dresses, those long tube things. I don't have the body for them.??
'And I definitely have a low boredom threshold. Tim says I don't put on one thing too many, but seven.'