Is a vegetarian

Her son is Crispian Mills, lead singer of Kula Shaker. Signed with Sony; their second single went straight to number 2 in UK charts. He is now part of The Jeevas.

Of the Oscar-winning father-daughter couples, she and her father are one of two couples (the other is Jane Fonda/Henry Fonda) where the daughter won an Academy award before the father did.

Mentioned in the song "Goodbye Lucille #1" by Prefab Sprout.

Daughter of playwright Mary Hayley Bell and actor John Mills.

In the movie That Darn Cat! (1965), her habit of biting her nails precluded her from using her own hands in close-ups. A studio worker, Tricia Blain, who just happened to be hanging around the set watching the filming was selected to serve as a double in those shots that required close-ups of the actress' hands.

Is the goddaughter of Sir Noel Coward.

At the age of 16 she was offered the title role in Stanley Kubrick's Lolita (1962) but her parents decided against it because they feared that the film's steamy subject matter might taint her wholesome image. The part went to Sue Lyon instead. In later years, Mills admitted that she regretted not taking the part.

Niece of Annette Mills.

Invited to join AMPAS in 2006

Her movie The Trouble with Angels (1966) is the favorite of Elizabeth Smart, the Salt Lake City girl who was kidnapped from her bedroom in June 2002 and found alive on March 12, 2003. She watched the movie with her family the day she was found and reunited with them.

Aunt of Sean and actress Melissa Caulfield.

Is the god-daughter of Sir Laurence Olivier.

Sister of Juliet Mills and Jonathan Mills.

On the 1st of January 2008 whilst presenting his show on TalkSport Celebrity MP George Galloway announced that his first love was Haley.

She and her father John Mills were the first Oscar-winning father-daughter couple

Sister-in-law of actor Maxwell Caulfield.

Her second son, Jason, was born of her relationship with actor Leigh Lawson