Fast forward to today and the TOWIE bombshell's secret is finally out in the open - and there isn't any mention of surgery, a personal trainer or even magic at all...
In fact, Billie relies on the Adonia Organics TummyTone Serum to blast her wobbly bits in preparation for on screen appearances to her stint in Marbella where her enviable bikini bod blew everyone else's out of the heavily chlorinated water.
Packed with a blend of fourteen organic plants, Billie's wonder serum promises to tighten and tone, reducing those dreaded flabby bits in under one hour - YEP, you read that correctly.
"I lost three inches from my waist in just 43 minutes," Billie revealed. "It's my go-to product if I've got a night out, a red carpet event or if I'm flying to Marbs! It's what got me into a bikini this summer and I was telling all the girls about it."
Just like the rest of us, curvy Billie admits to having a whole hoard of body hangups but reveals that nowadays, her beautifying regime is rarely without a little helping hand from this slimming saviour.
"There is the pressure to look good and we all want to look our best all the time," she says. "This has given me that confidence and it's that extra helping hand many of us women need! It's so easy to fit into your routine at home and means I have more choice of what to wear."
Medical boffs are also hailing the Adonia TummyTone as a safe, healthy and all round fabulous alternative to going under the knife - and at £49 a pop, you'd be a fool not to stock up!
"I've been a fan of this for a while," Billie says. "It genuinely got me back in my bikini within 12 months of having Nelly."
Well, if it's good enough for the stars...
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