This is 26! Megan Fox sizzles in a clingy dress at premiere... as she reveals she worked out throughout her pregnancy

She gave birth to her first child just three months ago.
But stunning brunette Megan Fox is clearly already back in the running for the Sexiest Woman Alive title as she arrived at the premiere for her latest film, This is 40, on Wednesday.
Wearing a clingy dark red dress and a pair of studded black stilettos the 26-year-old showed off her curvaceous figure and luscious locks as she posed on the red carpet.
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This is 26: Megan Fox, star of This is 40, dazzles on the red carpet in a clingy dress

The Transformers actress, who only gained 23 pounds during her pregnancy and exercised throughout the nine months, displayed none of the traits associated with new motherhood.
Megan, 26, looked well rested as she arrived with her fellow cast members at the premiere of the latest Judd Apatow comedy.
This Is 40 a spin-off of Apatow's hit 2007 film Knocked Up and takes a look at the lives of Pete (Paul Rudd) and Debbie (Leslie Mann) a few years after the events of Knocked Up.

New mum: Megan gave birth to her first child, baby Noah, in September

Overwhelmed: The actress recently opened up about the experience of becoming a parent

Megan's trainer Harley Pasternak recently revealed the how the star maintained her amazing figure: 'We worked out throughout her entire pregnancy. She was a model of health through the whole process,' he boasted.
'As a result, she was so fit at the point of delivery that it actually went more easily and she was able to get medical clearance relatively quickly to come back and keep working out'

But it's not all smooth sailing for the actress who admitted of motherhood: 'It's exhausting, but it's amazing and you can't, until you have kids, you can't imagine how much you could possibly love a human being. It's really intense and really overwhelming and amazing.'

Co-stars: Actors Paul Rudd and Megan Fox attend the premiere of Universal Pictures This Is 40

The 40-year-old star of the movie Leslie Mann arrived at Grauman's Chinese Theatre in Hollywood with her husband and director Judd Apatow and their two daughters Maude and Iris, who also appear in the comedy.
Leslie opted for a glamorous floor-length white gown featuring a plunging neckline with orange beading and a black band around the waist.
The blonde star wore her hair in a simple updo to reveal some drop earrings and accessorised with a white clutch.

This is 40: 40-year-old mum-of-two Leslie Mann didn't look too shabby either

The couple's eldest daughter Maude also wore white like her mother, looking stylish in a dainty white dress with bow belt.
Meanwhile, the couple's youngest, Iris, looked pretty in a brocade dress and Judd was dapper in his black suit as he proudly posed with his family, his best accomplishment yet.
'The kids really enjoyed being a part of making the movie,' Apatow told the Huffington Post.  'They have a lot of fun acting out their hostilities with each other in front of people, and I think the process of making a movie has made them get along better, because they had to team up and accomplish this.'

It's a family affair: Writer/director/producer Judd Apatow arrives with his family and cast members Iris Apatow, Maude Apatow and Leslie Mann

Girls creator Lena Dunham who plays Cat in the movie arrived in a short scarlet number and a pair of black heels.
Apatow is executive producer of the series, Apatow has functioned as a mentor to series creator and star Lena.