First look at Jesinta Campbell's mega beauty gig

Jesinta Campbell has walked the runway for some of Australia's biggest brands but she's revealed that she 'squealed' when she got the phone call to say she got the Olay campaign.

In a behind the scenes video from 24-year-old Campbell’s first campaign for the brand, she reveals her excitement at being named the face of its iconic Total Effects range.

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“I was so excited when I got approached by Olay. I did squeal when I got the phone call I think,“ she laughs in the clip.

“Before I actually signed on with Olay I made sure that I tested more of the products. I loved it, the Total Effects range. Since using it I find that it’s brighter and there’s definitely more hydration in my skin.“

The model went on to say that skin is so important in the fashion industry and she needs to feel confident in her own skin.

“Skin is so important in my line of work," she said.

"Quite often I appear on set with no makeup and freshly washed hair and it’s the first thing people see when they meet me.

"So it’s really important that I feel confident and comfortable in my own skin.

“Great skin to me, really, in one word, is confidence. I feel like I radiate from the inside out when I have good skin.“

In May, Campbell opened up to Be about getting body ready for David Jones' Spring/Summer collection showcase, which of course is all about the bikini.

“For me breakfast is one of my most important meals of the day," Jesinta said.

"I love a big green smoothie with a piece of toast with some eggs on it and avocado.

"Just keeping it really wholesome and clean and organic."

The model, who is engaged to Sydney Swans player Buddy Franklin also revealed that while she has a sweet tooth, chocolate will be out of the question as she trains for the show.

"It’s the lead up to Spring/Summer for David Jones so preparing for the runway again which is bikini so lots of 5am training, no chocolate for me,” she said.

The stunning model is also preparing for the release of her first book, which is set to hit stores on the 25th of October.