Ex-Hills star Lauren tied the knot with lawyer William at an intimate California ceremony on Saturday, 13 September.
Fans of The Hills will know that Lauren and Heidi have had their ups and downs over the years but that was water under the bridge for Heidi yesterday as she reached out to LC via Twitter.
Heidi tweeted: "Congratulations Lauren Conrad on finding true love and your soul mate! Sending you love and blessings! The best is yet to come! Love you!"
Lauren has yet to reply.
Although The Hills viewers saw Lauren make an unexpected appearance at Heidi's wedding to Spencer Pratt during the series, Heidi told Reveal earlier this year that she wasn't expecting an invite to Lauren's wedding.
"I think she would be surprised to see us! I think she might have been paid to come to our wedding."
It's common knowledge that Lauren wasn't too keen on Spencer throughout the series...
In any event, if Heidi had received an invite, she wouldn't have been able to attend as the same day Lauren married William, Heidi's sister Holly Montag married boyfriend Richie Wilson.
Heidi served as a bridesmaid for the ceremony which took place in the Montags' hometown of Crested Butte, Colorado, a place familiar to fans of The Hills.
After the nuptials, a thrilled Heidi tweeted: "Congratulations to @hollymontag !! Yesterday was the most beautiful wedding I could imagine! Wishing you all the blessings and joy! Love you!"
Stars who married in 2014:
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