Kourtney made the name change Monday on her official Instagram page, which now shows Travis' last name tacked on to her name, with a flaming heart emoji.
KKB is still rocking her original Insta handle ... kourtneykardash ... at least for now.
The wedding was held at the Dolce & Gabbana estate in Portofino. The reception at Castello Brown saw Andrea Bocelli sing as Kourtney and Travis had one of their first dances as husband and wife.
It will be interesting to see if Kourtney takes Travis' last name legally, or just sticks with it on IG.