LOS ANGELES, CALIFORNIA: Kourtney Kardashian has taken a significant step in her relationship with Travis Barker. Over a year after their wedding, she proudly announced that she has officially changed her last name to Barker.

Kourtney, 44, took to Instagram on Thursday, June 29, to share the exciting update. In a post, she displayed her newly updated ID, which showed her new name as Kourtney Kardashian Barker. The location tag indicated that she had visited the Department of Motor Vehicles (DMV) to make the official change. With her birth name, Kourtney Mary Kardashian, now replaced, it signified a significant milestone in her relationship with Barker.

'It’s long been tradition for the bride to take her husband’s last name'

"Say my name," Kourtney wrote in her caption. To further clarify her actions, she took to Instagram to share a screenshot of an article discussing the tradition of name changes after marriage. "It’s long been tradition for the bride to take her husband’s last name, and traditionally, she drops her middle name and keeps her last (her ‘maiden’ name) as her middle name. Her husband’s last name then becomes her new last name," read the snippet. "In case you didn’t know…," the reality star captioned her story.

However, fans have noticed that Kourtney's post coincided with the airing of an episode of 'The Kardashians' that featured her sister Kim's visit to the DMV to take her driver's license photo. In the episode, Kim went to great lengths to ensure her photo was perfect, even bringing her glam squad along for hair and makeup. The timing of Kourtney's post led some fans to speculate that it was a deliberate shade at Kim's extravagant DMV experience.

'Kourtney is totally mocking Kim'

A fan commented on Kourtney's photo, saying, "The shaaaaade," while another said, "But on Kim’s Drivers license episode? jk jk." Another said, "Did they shut down the DMV for you too or just Kim?!" "Not you copying kim," added a fourth. A fifth said, "I guess Ariel and Chris didn’t come to the DMV with Kourt too," while a sixth added, "Kourtney is totally mocking Kim's episode from today." "Please tell me that you did not bring your glam team like your sister did," said one, while another added, "We know what this post is about." "The sibling rivalry is SO real," someone else added.

However, other users jumped to Kourtney’s defense, arguing that her post had absolutely nothing to do with Kim and that she was simply "celebrating" her new last name. "I thought she was celebrating the last name. Or am I tripping? Everything isn’t tied to Kim," one person wrote, while another agreed, "This is not about Kim."