Kristin Cavallari shows off her post-baby figure in clingy maxi dress as she takes son Camden to toddler fitness class

By Heather Waugh

Published: 20:15 EST, 4 August 2014 | Updated: 20:15 EST, 4 August 2014

Kristin Cavallari is starting early when it comes to introducing son Camden to healthy lifestyle habits.

The stylish 27-year-old took the tot - who turns two this week - to a children's fitness class on Monday looking summery and chic in a striped maxi dress.

And she has made no secret of her own healthy diet and workout regimen, which she started three weeks after second son Jax arrived on May 7.

Starting him early:

Starting him early:

Former reality star Kristin showed off her slender physique in a white jersey dress with navy nautical stripes and swept her fair hair into a high ponytail.

To accentuate her tiny waist, the Laguna Beach alum wrapped a metallic belt around her waist for added glamour.

She donned comfy thong sandals and shielded her eyes with a chic pair of cat-eye sunglasses.

Casual chic: The 27-year-old reality star donned a clingy jersey maxi dress with nautical stripes

Casual chic: The 27-year-old reality star donned a clingy jersey maxi dress with nautical stripes

Healthy start: Kristin took her blue-eyed boy to a class at Fit For Kids which specializes in fitness classes for all ages of children

Healthy start: Kristin took her blue-eyed boy to a class at Fit For Kids which specializes in fitness classes for all ages of children

Little Camden looked adorable in his black T-shirt and grey shorts and mum dressed in him some sporty Nike sandals - perfect for his gym antics.

On Friday Kristin made her way to the E! studios for a guest hosting gig.

The beauty posted a photo standing at the show's news desk with the message, 'Co-hosting @ENews today :) dress is @azzedinealaia & shoes are kristin Cavallari by @chineselaundry.'

In-between presenting entertainment news she sat down to chat to E! about her ongoing healthy lifestyle.

She said: 'I'm a freak about what I put in my mouth. I'm constantly reading labels and I don't eat any toxic chemicals, so I think that plays a huge role.'

That way mum! Camden pointed to something interesting in the distance as he sat happily in his mum's arms

That way mum! Camden pointed to something interesting in the distance as he sat happily in his mum's arms

Kristin Cavallari
Kristin Cavallari

Stylish: The blonde beauty wore a pretty embroidered mini dress as she arrived to co-host E! News on Friday. She also sat down to talk about her healthy habits since giving birth in May.

She added: 'I'm breast-feeding, which burns a ton of calories, and I can probably just thank my mama too, you know.' giving credit to the fantastic genes she inherited.

The blonde beauty also revealed recently that she's lost 20 pounds and is close to reaching her goal weight.

'I started working out when Jax was three weeks old,' she admitted.

'I've been working out four to five times a week for 30 to 45 minutes at home, doing tons of leg work like squats, lunges and lifting weights.'

She is married to NFL quarterback Jay Cutler, 30, who is currently away at training camp.

On-screen beauty: Kristin showed her hosting talents as she took to the E! News desk and shared this photo to her Instagram

On-screen beauty: Kristin showed her hosting talents as she took to the E! News desk and shared this photo to her Instagram

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