Sandra Bullock has revealed that a cheetah onesie has become her favourite nightwear choice.

The Heat star explained that she loves wearing the unusual animal outfit as it makes her 3-year-old son Louis laugh.

Bullock told Italian magazine Io Donna: "The only man in my life is my son, and it's probably going to stay this way for a while.

"I go to bed wearing a very baggy one-piece cheetah suit, just because it makes my son laugh."

The actress, who is currently single, joked: "My sexy lingerie has been locked in a drawer for a while!"

Bullock also spoke about the routine she has with Louis, saying: "Every day my only focus is my son. I wake up at dawn, drive him to school and leave only a couple of hours for myself and that time is usually spent doing laundries.

"You know those parents who always complain about being exhausted? I feel exactly the same, but with him everything is also fun and new.

"I wake up in the morning and the only aim is being fun, who could say that? I feel lucky and blessed."