While the last 12 months have been rough, Selena, 26, seemed relaxed and extremely happy for her best friend on her big day!
Although the "Back To You" singer has yet to post any photos from the wedding, other guests posted a few that included the A-lister.
Selena took to the photo booth after the beautiful ceremony to take a few silly photos with friends.
The star wore a black sweetheart neckline dress with crystal detailing. She kept her dark locks slicked back into a ballerina bun and accessorized with long dangly earrings.
The wedding party danced to songs like “We Are Family” by Sister Sledge, Cardi B's "I Like It," and even a few of Selena's own tracks like "Hands To Myself" and "Taki Taki."
The bride looked stunning in a simple white silk gown paired with a traditional white veil. The groom, Sam Lopez, looked dapper in a navy blue suit, which he wore with shiny brown dress shoes and a patterned tie.
On January 19, Selena threw Courtney a bridal shower in Los Angeles!
And not long before the wedding took place, Selena and her best pals celebrated Courtney in Cabo San Lucas, Mexico for a weekend full of bachelorette festivities. Some of the actress's good friends, like Ashley Cook and Raquelle Stevens, were on the trip.
In an Instagram Live, the 26-year-old once revealed that her closest friends are not in the entertainment industry and are very protective of her. "They loath the industry sometimes, but they love like what I get to do with my fans and for my fans but all of the other stuff they are protective of me," she revealed in September 2018.
Who do you think will be next to get married in Selena's friend group? Let us know in the comments below!