The Don't Trust the B---- in Apartment 23 actress married Christopher McMahon in Hawaii on Saturday, Walker confirmed on Instagram.
Walker, 29, posted a shot on Sunday of her and her groom standing on a beach in Kauai, looking ready for a newlywed kiss as palm trees sway in the background.
"Yesterday I married my other half !" she captioned the romantic pic, which shows off her strapless wedding gown and long veil, while her "other half" looks dapper in a black tuxedo.
The actress also shared a photo of the couple as they exchanged vows in an outdoor ceremony overlooking the ocean, a canopy covering them as they hold one another's hands in front of an officiant. (The hashtag for the wedding-related snaps? #mahalomcmahons, naturally.)
The bride also shared some color from the reception, including a shot of some champagne on ice alongside what appear to be chocolate-covered strawberries decorated to look like a bride and groom.
"The beginning!" she captured the festive shot.