Justin Bieber is honoring Hailey Bieber on her birthday.

On Instagram, the 28-year-old artist posted a touching tribute to his wife of four years as they mark her 26th birthday in Japan. He shared six photos of them together, presumably taken from their trip abroad.

In the caption, Bieber greeted the model with a “HAPPY BIRFDAY,” noting that she is his “FAVORITE HUMAN BEING.” He also added in the same post that Hailey makes his “LIFE MAGIC” before stating that he is “OBSESSED WITH EVERYTHING ABOUT YOU.”

The “Stuck With U” singer ended his post with “love you bum bum” in all caps.

The post, which surfaced on the platform on Monday, has amassed over 5.9 million likes. It has also received more than 25,000 comments, with many netizens sharing their own greetings for Hailey Bieber.

E! News shared in a recent report that Justin Bieber and his wife have gone to Tokyo, Japan, ahead of the model’s birthday on Tuesday. It noted that the pair had spent days leading up to the special day in the country, where his Drew House label had a pop-up shop.

The publication also noted in the same piece that Hailey’s best friend, Kendall Jenner, has arrived in Tokyo just in time for a potential birthday celebration. It reportedly came after she posted a clip on her Instagram Stories with a text that read: “loving you, Tokyo.”

While Justin Bieber has already posted about his wife’s birthday on social media, Hailey Bieber has yet to do the same. Even so, she appears to be marking her name day on the platform with the release of new products from her brand, Rhode.

The Daily Mail reported that the model released promotional materials on Instagram these past few days.

In the latest set of teasers from her label’s official account, she is said to have flaunted her toned frame in silk lingerie as she promoted new products from her line, which would become available on the day of her birthday.

The outlet also noted in its report published Tuesday that Hailey sported a silk bra and matching underwear and sat alongside a white cake topped with whipped cream and cherries in the teaser photo.

Meanwhile, Hailey Bieber’s 26th birthday comes two months after she and Justin Bieber celebrated their fourth wedding anniversary. They both marked the relationship milestone with touching tributes on social media.

The Bieber couple secretly tied the knot in September 2018, just two months after they got engaged. A year later, they held another ceremony and exchanged vows with their families and friends as their guests.