The actress has shed six stone and gone from a size 30 to a size 16 in the space of 10 months, after embracing a healthier lifestyle.
The 39-year-old recently shared a slimline snap of her enjoying a break in Singapore, which she captioned: "Singapore......Flying high on life!!!"
Lisa, who appeared on the 2012 series of ‘Strictly Come Dancing’, decided to make changes to her lifestyle after her father had a cancer scare and was diagnosed with Type 2 Diabetes.
She told Bella magazine: "Losing my mum then seeing my dad wired up and nearly losing him and becoming an orphan was a shock to my system.
"I don't want to be a statistic. I just want my health to carry on, to live my life to the fullest."
As a result, Lisa decided to cut out all alcohol from her diet and started taking regular exercise, including Zumba and yoga classes.
She added: "I'm not on a diet - diets don't work. It's been about awareness and lifestyle. I'm loads more active than I used to be.
"I've not drunk alcohol for a long time now. I pat myself on the back every day that not one drop of alcohol has passed my lips and I don't think it ever will again."
Lisa has previously spoken out about the body shaming that happens in the media and on social platforms.
“Body-shaming is completely and utterly wrong,” she said. “I want to be judged because I am a good actress or a good presenter – that is all.
“Whether my hair is pink, red, green or black, that is down to me. No matter what I look like I shouldn’t be judged, it is nobody else’s business.”