'I couldn't believe what I weighed!' Jessica Simpson reveals her horror at pregnancy weight gain as she shows off newly toned figure

Showing off her slender figure in a flattering black dress, it's clear Jessica Simpson is feeling good about her body.
But the Weight Watchers poster girl has admitted she struggled to cope with her fuller figure post-pregnancy.
'I was so insecure. I couldn't even believe what I weighed,' she explained on ABC's Good Morning America on Tuesday.

'I couldn't believe what I weighed!' Jessica Simpson opened up about her struggles to lose her baby weight in an interview on GMA this morning

Back to her best: The singer turned businesswoman is now happy with her figure, after sticking to a healthy diet and following the WeightWatchers plan

'I don't think that I ever expected myself to see the numbers that I have seen on the scale.'
As Jessica showed off her now-slender figure in a newly released Weight Watchers advert she opened up about her journey.
After losing 50lbs following her first pregnancy with daughter Maxwell, Jessica unexpectedly fell pregnant with son Max, now seven months.

She's worked hard: Along with her healthy diet, Jessica has made it her mission to live a healthy lifestyle

Slimmed down: Jessica is now the face of WeightWatchers

And she admitted it was hard not to focus of the weight gain that was coming.
'It was hard to suppress it,' said Jessica. 'I knew that I would be gaining back the weight so I didn't really think about it that much.
'I went on walks and I worked out throughout my second pregnancy.'

Looking good: Jessica poses in a doorway, proudly showing off her trim new figure

Talking about her daily routine, Jessica explained how she controlled her hunger.
'For breakfast I'm an oatmeal girl. Lunch, I do like bread so I mean I will, like, have a sandwich or something. But for dinner I try and keep it super clean.'
Luckily for the 33-year-old she has the perfect motivation for her weight loss - her upcomoing wedding to retired NFL player Eric Johnson.

And she revealed that the couple had set a date.
'Yes, we're planning a wedding,' she said excitedly.
'Since I was on GMA last I have a date, I'm super excited.'
But she refused to give any hints as to when it would be, saying simply: 'Nah, nah. It'll be soon enough!'

She's looking good: Trim and toned Jessica obviously spends hours in the gym

And after her wedding she hopes to get back to her first career - as a singer
'I wanna sing again,' she said. 'I want my daughter to see me onstage. My fiance has never even watched me perform. Which is crazy.
'That's my passion that's my love that's everything that I am.'

In her younger days: Jessica in The Dukes Of Hazzard pre-pregnancy

Weight loss journey: Pregnant with her first child in January 2012, left, and post-baby in December 2013

DM