Olivia Culpo burned off a "whole section" of her hair with a hairdryer.

Olivia Culpo

Olivia Culpo

The 24-year-old actress and model has revealed she was left traumatised after she used the broken hair tool, which she didn't realise was not working, and it singed her brunette tresses, but the star has revealed she has learnt her lesson and won't use things without asking first.

Speaking to PEOPLE about the mishap, 'The Other Woman' star said: "I was living with my sister in L.A., and it was a really awful time for me.

"I found this hair dryer underneath the sink - I didn't realize it had completely broken for some reason. I literally burned off a whole section of my hair!"

"A whole chunk of my hair, like, this thick but this long came out of my hair.

"Don't ever use a hair dryer that you don't know works, ladies and gentlemen!"

And Olivia - who was crowned Miss USA in a beauty pageant in 2012 when she represented Rhode Island - has revealed following the incident she turned to her sibling and sobbed.

She explained: "And I just looked at my sister and I started to cry. Her face turned bright red."

Meanwhile, the brunette beauty has revealed her "favourite" garment she has worn to a star studded event was the mustard-coloured Galvan dress for the InStyle Awards, which she has revealed was inspired by Kate Hudson in the 2003 romantic comedy 'How To Lose a Guy in 10 Days'.

Speaking about the showstopping gown, she said: "One of my favourite looks was this beautiful Galvan [London] mustard-coloured dress. I was wearing this gorgeous berry lip and my hair was sleek back, something I haven't done in a really long time.

"You know who else I was inspired by with this look? Kate Hudson in 'How To Lose a Guy in 10 Days'. When I tried on this yellow dress I was like, 'Oh my god! I feel like I could be with Matthew McConaughey on the cover!"