Kourtney Kardashian and Travis Barker have had their last wedding ceremony, probably. Let's look at all of Kourtney's wedding looks for her three ceremonies.
Their first practice run wedding was in Las Vegas by an Elvis Impersonator right after The Grammy's. She wore vintage Versace with a black leather jacket. For this informal ceremony the couple did not have a marriage license so this was not a legal marriage.
After this was their legal marriage at the Santa Barbara Courthouse where Kourtney wore vintage Dolce and Gabbana. It should be noted, that for people that have destination weddings it's not uncommon to get legally married in the United States before the destination wedding. This intimate ceremony was attended by Travis' father and Kourtney's grandmother, Mary Jo.
For the pre-Italy ceremony events, Kourtney wore black and white Dolce and Gabbana, similar in style to her Santa Barbara courthouse wedding. Where the Santa Barbara white dress had a jewel, the black dress had what appears to be a depiction of the Virgin Mary. She even wore a black veil with blue embroidery.
For the couples Catholic wedding in Italy, Kourtney wore a short, white, Dolce and Gabbana dress - I'm starting to sense a theme here. Her very long veil also has a depiction of the Virgin Mary with delicate flower appliqués. She also wore white fingerless gloves which fits very well her her now husbands edgy rock and roll vibe.