Imogen Thomas shows off post-baby body on first night out without baby Ariana

Imogen Thomas has had her first night out without baby Ariana, showing off her post-baby body.

Imogen Thomas showed off her post-baby body last night. Copyright [Rex]Imogen, who gave birth a month ago, looked happy and healthy as she stepped out on her first red carpet since having little Ariana Siena.

The former glamour model, 30, rocked the monochrome look, in a pair of black trousers teamed with a black top and white blazer.

Imogen Thomas looked happy and confident as she posed on the red carpet. Copyright [WENN]Her hair looked shiny and glossy following a luxury cut and blow dry last week, and her skin was glowing. But she had admitted that she was feeling very sleep deprived.

She tweeted yesterday morning: "Got my first job on celebration of wink bingo new uk advertising campaign!! And I'm sleep deprived! Oh well get on with it."

Imogen Thomas admitted she's sleep deprived following the birth of Ariana. Copyright [WENN]Imogen admitted this week that she's going to start a diet and fitness plan soon, in order to lose the weight she put on while pregnant.

The star revealed that she'd like to get back to the size 10 figure she had last summer.

[Related article: lmogen Thomas poses for no makeup Twitter picture with baby Ariana]

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Imogen said: "While she's [Ariana] put on weight, I've lost some - mainly water retention. Now my tracksuit actually fits me! I'm taking exercise very slowly, but in the next couple of weeks, I'll be working out with a personal trainer and using Slim Sticks."