Hailey Baldwin wears a baseball cap with Justin Bieber's last name across it while heading to the gym in LA

They've been married for nearly nine months.

And on Monday, Hailey Baldwin, 22, showed off her married name by wearing a black hat with 'Bieber' embroidered across it.

Sporting husband, 25-year-old Justin Bieber's last name (as well as her new last name), Hailey made her way to the gym in Los Angeles.

Repping: On Monday in Los Angeles, Hailey Baldwin, 22, showed off her married name by wearing a black hat with 'Bieber' embroidered across it

Repping: On Monday in Los Angeles, Hailey Baldwin, 22, showed off her married name by wearing a black hat with 'Bieber' embroidered across it

Married life: The trucker hat was black with gold embellishments - including the cursive font that the household name was printed in

Married life: The trucker hat was black with gold embellishments - including the cursive font that the household name was printed in

The trucker hat was black with gold embellishments - including the cursive font that the household name was printed in.

Hailey paired her supportive accessory with blue Alo yoga leggings and a green crew neck sweater.

She rocked white tennis shoes as she left a parking garage, getting ready to workout. 

Gym ready: Hailey paired her supportive accessory with blue Alo yoga leggings and a green crew neck sweater

Gym ready: Hailey paired her supportive accessory with blue Alo yoga leggings and a green crew neck sweater

Supplies: The supermodel daughter of Stephen Baldwin carried her cell phone and keys in one hand and cradled a plastic bag against her chest with the other arm

Supplies: The supermodel daughter of Stephen Baldwin carried her cell phone and keys in one hand and cradled a plastic bag against her chest with the other arm

The supermodel daughter of Stephen Baldwin carried her cell phone and keys in one hand and cradled a plastic bag against her chest with the other arm. 

Her blonde mane was back in a messy bun.

Adding some flair, she also wore small silver earrings to finish off the look. 

She climbed out of her vehicle with another black purse in hand as well. 

Good to go: She climbed out of her vehicle with another black purse in hand as well

Good to go: She climbed out of her vehicle with another black purse in hand as well

Hailey's gym session follows her carefree Sunday spent with the man who's name she flaunted. 

The pop star and his model wife were decked out in comfortable sweats as they arrived at the Beverly Hills Hotel. 

Later on Sunday, Justin shared some lovely black and white photos of himself and his love to his Instagram.

The Baby singer was laying down a track in the studio as he and Hailey showed off their affection.

In the studio: Later on Sunday, Justin Bieber, 25, shared a lovely black and white photo of the husband and wife duo that showed off his extensive ink work and Hailey's winning soft smile

In the studio: Later on Sunday, Justin Bieber, 25, shared a lovely black and white photo of the husband and wife duo that showed off his extensive ink work and Hailey's winning soft smile

'Studio vibes.. with my studio chicka [sic],' wrote Justin. 

The couple, who married back in September, seem to spend most of their time in New York City, but the couple have been in Los Angeles over the last week and a half as Justin works on new music in the studio.

Thanks to the success of his current collaborative single, the pop sensation has inched ever closer to being one of the most dominant musicians of his era.

According to Forbes, he currently boasts 15 top 10 singles, and he's now tied with Bruno Mars for the fifth-most number one hits, as well as the second-most number one songs for a male artist. 

Justin also holds the impressive (if possibly frustrating) record for the most debuts at number two on the charts, with four songs initially reaching that spot.

Loving couple: They spend most of their time in New York City, but the couple have been in Los Angeles over the last week and a half as Justin works on new music in the studio

Loving couple: They spend most of their time in New York City, but the couple have been in Los Angeles over the last week and a half as Justin works on new music in the studio

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Hailey Baldwin shows off her taken status by wearing cap with Justin Bieber's last name across it

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