The former 'Vampire Diaries' actress walked down the aisle in Beverly Hills, California, on Saturday - and their pet pooch Teddy Holt-Joblon also attended the nuptials wearing a tuxedo.
Claire posted a picture of the happy couple standing in front of floral arch on their big day alongside their pet pooch, and she simply added the caption: "8.18.18"
The 30-year-old star revealed back in December that she and real estate executive Andrew - who previously dated Amanda Seyfried - had got engaged.
She posted a picture on Instagram of them kissing, and in the snap she could be seen holding up her engagement ring-clad hand.
Claire wrote: "My heart is so full"
The 'Mean Girls 2' star's engagement came just months after she split from her husband Matt Kaplan.
She had previously married the TV producer, her long-time boyfriend, in April 2016 after getting engaged in July 2015, but he filed for divorce in April, citing "irreconcilable differences", and she responded in May 2017, asking for her name to be changed back to Holt.
The 29-year-old actress - who played Rebekah Mikaelson in 'The Vampire Diaries' - appeared to confirm she was dating Andrew in July 2017 when she posted a number of pictures of their holiday in Italy and described the time as the "best month of my life".
She wrote: "Finally homeward bound after the best month of my life. Thanks for the memories! (sic)"
Andrew and Amanda were said to have dated for around a year but they called time on their romance in 2012.