Kerry Katona shows off her lace bra as she shows off incredible 4th weight loss to hit the town with daughter Heidi to celebrate her 17th birthday

Kerry Katona showed off her four stone weight loss as she stepped out to Canary Wharf with daughter Heidi on Monday to celebrate her brood's 17th birthday.

The former Atomic Kitten singer, 43, who recently dropped to dress size six, exposed her white lace bra which she wore under an open cardigan and trousers.

For the outing to Phantom Of The Opera, Kerry showed off her toned abs and quest for tattoos in her cream two-piece.

She added inches to her stunning figure as she teamed her look with a pair of rainbow Kurt Geiger heels and a matching bag.

The reality star had lighter locks and a big smile on her face as she enjoyed her night out.

The former I'm A Celebrity star later wrapped up warm in a white woolen trench coat.

She added a touch of glamor when she completed her outfit with a Burberry scarf.

The blonde beauty appeared hand in hand with her daughter Heidi, who had a professional make-up done for the occasion.

Heidi opted for a more casual look to celebrate her big day as she stepped out in a PrettyLittleThing jumper, leather jacket and leggings.

The two golden girls were joined by Kerry's fiancé, Ryan Mahoney, 35, and her other daughter Lilly-Sue McFadden, 21, who Kerry shares with ex Brian McFadden.

Lilly-Sue dressed in a classic little black dress and black strappy heels.

The family, who were staying at the Canary Wharf Plaza Hotel, traveled to the theater together in a taxi.

Kerry looked happier than ever in her stunning outfit after dropping several stones in recent months.

She has adopted a new diet and exercise routine and previously told how she went from a size 16 to a size six in just one year, which has also boosted her mental health.

Now weighing a healthy 3.5kg, Kerry incorporates yoga, strength training and cardio training into her daily routine.

Despite previous struggles with yo-yo dieting, Kerry has now taken a balanced approach, combining calorie counting with exercise.

Writing in her OK! magazine column on Monday she said: 'I can't believe how much weight I've lost now – I'm a size 6-8.

“I've been really doing a great job with my training every day and putting a lot of effort into it, so I'm glad it's paying off.”

The holidays come as Kerry is reportedly delving into the world of acting after starring in the romantic comedy Finding Forever.

After battling bankruptcy in the past, the TV personality has made millions from racy posts on OnlyFans, and is now 'training her bum' to get in shape for the role.

Earlier this month, Kerry revealed that she had signed with acting agent Donia Youssef of Wonder Talent Management, and will now play the lead role of Nina Bennet in Finding Forever.

A source said The sun: 'Kerry becomes fanatical and trains her hardest during the preparation – this is an intense and emotionally intense six-week course and she puts blood, sweat and tears into it.

'She is professionally coached one-on-one by acting coach Antonia Dogett.

“Kerry has always been a good little actress, but respects that acting takes years of training. She not only wants to play the role, she intends to do it well.”

Finding Forever follows three best friends who are at different stages of their relationship: one is a serial dater, one is in an early marriage, and one is a bachelor newly engaged to Destiny.

Things take a turn when the pressure of work and a nagging fiancé tip the groom over the edge.