'The boys are so excited to have a little sister!' Kristin Cavallari reveals she's expecting a baby girl with sweet photo

Kristin Cavallari is expecting a baby girl with husband Jay Cutler.

The pregnant 28-year-old announced the happy news on her Kristin Cavallari Official app on Thursday.

Kristin shared a photo which showed her holding a pair of baby pink Converse trainers, with her arms on Jay's shoulders as they gazed into each other's eyes.

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It's a girl: Kristin Cavallari shared this sweet photo to announce she and Jay Cutler are having a daughter

It's a girl: Kristin Cavallari shared this sweet photo to announce she and Jay Cutler are having a daughter

The Hills alum wrote the caption: 'The boys are so excited to have a little sister on the way!!!'

This is the third child for Kristin and her Chicago Bears husband, who celebrated their second wedding anniversary last month.

The couple are already parents to sons Camden, who turns three next month, and 13-month-old Jaxon.

Kristin announced her third pregnancy in May, telling fans: 'We’re at it again! Thrilled to announce baby number 3 is on the way! The cutler crew just keeps on growin'! 

Growing family: The reality star and the NFL player, pictured in May, are expecting their third child together

Growing family: The reality star and the NFL player, pictured in May, are expecting their third child together

Look red hot in this Tatyana Merenyuk gown

Kristin might have suffered a near wardrobe malfunction meltdown in reactor 5 but that dosen't mean it wasn't worth the risk. She is en fuego in this stunning ethereal gown by wedding designer Tatyana Merenyuk.

More known for her bridal wear, Merenyuk also has a comprehensive collection of ready-to-wear pieces featuring feminine separates, cocktails dresses and gowns.

Merenyuk's look book styles this gown with the straps capped around the shoulders but Kristen made the daring decision to let them hang delicately around her arms. Tomato, tomahto--however you choose to wear it, you'll look and feel staggering.

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The reality star turned shoe designer and the football quarterback came under scrutiny last year for their decision not to vaccinate their children.

During an interview on Watch What Happens Live, Kristin defended her anti-vaccine beliefs as 'the best decision' for them.

Asked how she could support the idea of potentially spreading deadly diseases by not having her children vaccinated, Kristin explained: 'Here's the thing: At the end of the day, I'm just a mom.'

'I'm trying to make the best decision for my kid. There are very scary statistics out there regarding what is in vaccines and what they cause - asthma, allergies, ear infections, all kinds of things.' 

'Feeling like a kid again': Kristin shared a photo to Instagram on Thursday from her family day out

'Feeling like a kid again': Kristin shared a photo to Instagram on Thursday from her family day out

Oh what fun: Jay went on the teacups ride with son Camden, two, and his cousin. The couple are also parents to 13-month-old Jaxon

Oh what fun: Jay went on the teacups ride with son Camden, two, and his cousin. The couple are also parents to 13-month-old Jaxon

She added: 'And we feel like we're making the best decision for our kids.'

Kristin and Jay started dating in 2010, and got engaged the following April, but ended their relationship three months later.

In November 2011, the pair announced that they were back together and they revealed in January 2012 that they were expecting their first child.

Kristin and Jay married in Nashville, Tennessee on June 8, 2013. 

'We're at it again!': Kristin announced her third pregnancy with a sweet Instagram snap in May

'We're at it again!': Kristin announced her third pregnancy with a sweet Instagram snap in May

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