The former Laguna Beach and Hills star announced this weekend that she and fiancé Jay Cutler are expecting their first child together later this year.
In a tweet to her followers today, the reality star said: "Thanks for all the sweet messages! We are so excited for this little bun in the oven :) (sic)"
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Among those who have sent their well-wishes to the couple are Cavallari's former The Hills co-stars Heidi Montag and Audrina Patridge, who both offered their congratulations via Twitter.
Montag wrote: "Congrats on your life changing news!!!! You are going to be such an amazing mommy!! Sending you So much love!! Xoxo (sic)," while Patridge said: "Congrats Kristin!!!:) gonna be such a cute baby xoxo."
Cavallari and NFL stay Cutler recently became engaged for a second time following a brief split last year.
In a statement to People confirming the pregnancy, the couple said: "It's an amazing time in our life and we can't wait to meet the new addition to our growing family."
