Jennifer Ellison shows off a much curvier figure as she leaves a burger restaurant

Jumping for joy! An excitable Jennifer Ellison shows off her new curvier figure as she leaves a burger restaurant

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UPDATED:

16:02 GMT, 28 September 2012

She's endured a yo-yo battle with her weight over the past few years, and is said to have put on a stone in recent months.

But one thing is for certain, Jennifer Ellison seems to be jumping for joy with her curvaceous new figure.

The 29-year-old actress looked positively over the moon as she leapt up into the air with a pal following a calorific lunch together.

Curvier: Jennifer Ellison showed off a slightly tubbier tum as she enjoyed a bite to eat with a pal in London

Curvier: Jennifer Ellison showed off a slightly tubbier tum as she enjoyed a bite to eat with a pal in London

After having enjoyed a tasty treat at a London branch of Gourmet Burger Kitchen, the Legally Blonde: The Musical star seemed to be living by the food chain's mantra, 'Eat burgers, be happy'.

With a broad grin on her face, the mother-of-one didn't seem to care who saw as she flashed her slightly tubbier tum for all to see.

Jennifer was keeping her curves relatively hidden in a loose-fitting cream top and dark grey jeans as she stepped out on her lunch date.

The blonde completed her casual daytime look with a pair of high-top trainers and her locks curled and pinned to the top of her head.

Jumping for joy: The 29-year-old star seemed to be positively thrilled after having treated herself to a burger for lunch

Jumping for joy: The 29-year-old star seemed to be positively thrilled after having treated herself to a burger for lunch

A whole lot of fun: Jennifer and her pal were spotted playfully jumping into the air as they emerged from a brand of Gourmet Burger Kitchen

A whole lot of fun: Jennifer and her pal were spotted playfully jumping into the air as they emerged from a brand of Gourmet Burger Kitchen

A source recently claimed the former Dancing On Ice star has 'never been happier' with her current size, because she dislikes the idea of continuously working out and dieting.

The insider told Heat magazine: 'She found going back to work and being a mum hard enough.

'Doing Dancing On Ice was perfect was perfect as it was constant training, but when that finished she simply didn't have the time.'

At the start of the year, Jennifer unveiled her new trim figure after creeping up to a size 18 while pregnant with her baby son Bobby, now 19 months.

Keeping it casual: The mum-of-one kept her curves hidden in a loose-fitting white top and dark grey jeans

Keeping it casual: The mum-of-one kept her curves hidden in a loose-fitting white top and dark grey jeans

Keeping it casual: The mum-of-one kept her curves hidden in a loose-fitting white top and dark grey jeans

Cover-up: Jennifer was spotted leaving the ITV studios in central London wearing a navy blue onesie on Friday lunchtime

Cover-up: Jennifer was spotted leaving the ITV studios in central London wearing a navy blue onesie on Friday lunchtime

She told Loose Women at the time: 'I didn't want to be in the gym. I just wanted to be a mum. I didn't realise how big I was until I look back now… I put on like five stone.

'I was still in maternity stuff a year [after the birth]. It was really, really hard. It is difficult, but when you know the key things to fitness, I've kind of been taught.

'I got a the call about Dancing On Ice and I thought “Right, you've got to get your backside into gear girl”. I thought “I need a personal trainer”.'

Yo-yo dieter: Jennifer unveiled her slim figure in January 2012 (L), after have crept up to a size 18 following the birth of her baby son Bobby (R)

Yo-yo dieter: Jennifer unveiled her slim figure in January 2012 (L), after have crept up to a size 18 following the birth of her baby son Bobby (R)

Yo-yo dieter: Jennifer unveiled her slim figure in January 2012 (L), after have crept up to a size 18 following the birth of her baby son Bobby (R)