Britney Spears has shared her six celebrity "crazy girl crushes" - and revealed she is writing a second book

Taking to her Instagram Stories, she penned: "Women I genuinely admire and have crazy girl crushes on!!! Let's talk about how your other half growing up is usually your best friend!!!

"Y'all literally finish each others sentences and you don't really look alike but because you're always together, your mannerisms, the way you speak, and even walk it's almost like you're the same f****** people!!!"

She went on: "Years go by and you get married and you grow up and live worlds apart!!! It's called life!!!

"I have girlfriends I hang out with every now and then but it's not the same as when we were younger!!! But why isn't it??? I wanted to share the women who inspire me!!!"

The 'Womanizer' hitmaker went on to gush over the six famous females she adores: Pamela Anderson, 57, Natalie Portman, 43, Camila Cabello, 27, Kendall Jenner, 28, Selena Gomez, 32, and Drew Barrymore, 49.

She said: "Pamela Lee Anderson is a classic babe and seems so sweet!!!

"Natalie Portman because I feel like she's the coolest person I ever met outside with her dog in New York and we had the same shirt on!!!

"Camila Cabello the singer because she's so darn pretty and she makes me giggle out loud!!! Her personality is so sweet and kooky I think it's healthy to be silly!!! I wish I was like that!!!"

Britney added: "And like Kendall Jenner is it even normal to be that pretty??? Geez and the other two are Selena Gomez and Drew Barrymore they're literally gorgeous!!!"

After the random brain dump, Britney then explained that she is penning a new tome.

She concluded: "Honestly I have no idea why I'm writing all this !!! I'm away writing my novel and learning about myself.

"But I do so miss being silly with the girls !!!"