And when we caught up with the gorgeous mum-of-one at the launch of her new clothing collection for In The Style, she told us she has no regrets over her big decision.
"I just think my time is kind of done there," she smiles.
Over the years we've seen big names leave each series, and the star admits she's feeling a bit lonely without her old pals. She explains, "Things have to move on. There are so many new characters – it's like a new era now. I think there's only Arg [James Argent] and Lydia [Bright] left from the original cast."
The 26-year-old joined the ITVBe show along with younger sister Samantha, 25 - who quit in 2014. She also filmed with TOWIE legend Lauren Goodger, 29, who recently announced she'd be going back to the show four years after leaving.
However, despite having a familiar face back on set again, Billie is sticking to her guns. "Lauren is good TV, so she'll be great to watch but I just want to focus on other things," she insists before adding, "I'm not saying I'd never go back because it has been amazing."
So what exactly does she have planned?
Billie reveals she's been feeling a tad jel seeing the success of old cast members and admits she'd also like to try her hand at something new. "Others have gone on to great things. So, I suppose it's kind of nice to start a new chapter of my life. I feel like I should try something different," she says.
And although she's quit TOWIE, the blonde beauty still plans to grace our screens, as she hopes for her very own show. "I'd like something more fly on the wall, where viewers could get to know my personality and my relationship," she says.
It's no secret that Billie, who already has two-year-old Nelly with her fiance Greg Shepherd, 31, has wanted to expand her brood, insisting in May that she, "will be pregnant by the end of the year".
As she gushes about family life, she reveals, "It's still in the plan. I am trying because I would like to have another baby soon." But as we fast approach the final quarter of the year, Billie confesses: "Obviously you can't exactly schedule it. It happened really quickly with Nelly, so I'm just going with the flow."
It seems the Essex beauty is feeling the pressure from her demanding toddler, as she tells us, "Me and Greg always go to her 'do you want a brother or sister' and sometimes she says, 'brother' and then sometimes she says 'brother and sister' and I'm like 'she wants more!'"
Luckily for Billie, Nelly isn't all alone thanks to sister Sam's seven-month old tot Baby Paul, who she had last year with her partner Paul Knightley, 27. "We get to see him everyday which is lovely," Billie says.
And it appears Nelly is a natural, when it comes to playing the older sibling. "I could see her with a younger brother or sister, as she's just great with Paul. He's so intrigued by her as she runs around him all the time, saying, 'Hello Baby Paul', while making funny faces. She even tries to put him in her doll's pram," she laughs.
Billie Faiers' collection is available now at InTheStyle.com
TOWIE airs Wednesday at 10pm on ITVBe.
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