The 20-year-old blonde bombshell dressed in lilac to walk mum Krista Keller down the aisle in LA on Sunday, 14 December.
Courtney shared a picture from the reception to Instagram, showing herself and mum Krista cuddling up for the camera.
The caption read: "My mummy got married today. She makes a beautiful bride!"
This is Krista's second marriage, according to Us Weekly, who have revealed the groom was technology businessman Reggie Salazar.
Courtney attended the wedding alongside husband Doug Hutchison. They're back together following a brief period of separation last year.
Following Courtney's appearance on CBB over the summer, the reality couple announced their split in November, but said they'd remain friends.
Love, however, was swiftly back on the cards, and by the following year they were back together and engaged to re-marry once again.
It was Courtney's mum Krista who announced the reconciliation, telling FOX411: "Courtney realised just how much love she really had for Doug. They really love each other and wanted to be together."
Courtney and Doug's relationship has been in the headlines since the start, as Courtney was just 16 when she married then 51-year-old Doug in Vegas.
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