The All Of The Lights rapper, 45, was reported to have married the architectural designer with earlier this year at a private ceremony.
The rumoured wedding came just two months after the Yeezy founder finalised his divorce from Kim Kardashian.
While the new couple had remained quiet on their marriage status, a video posted this weekend by a TikTok user saw Bianca refer to Kanye as her ‘husband.’
The social media account user filmed a conversation with the Australian in a shop in LA and asked her for her number.
However, Bianca apologised that she wouldn’t be able to give him her deets because she was married.
Bianca is an architectural designer at Kanye’s firm Yeezt
The man seemed disappointed as he asked: ‘Really?’ before adding ‘Damn,’ when Bianca nodded.
Bianca joined Ye’s company in November 2020, but it’s not known how long they have known each other.
In song Censori Overload, the star appeared to pay tribute to his ‘wife’, and even references marriage in the lyrics as he sings: ‘And The Bible said, I can’t have any more sex till marriage.’
The Gold Digger hitmaker was married to ex wife Kim from 2014 until November 2022, and the former couple have kids North, nine, Saint, six, Chi, four, and Psalm, three, together.
Kim and Kanye went public with their romance in April 2012, and got married in a lavish ceremony in Italy two years later, just months after the birth of their eldest daughter, North.
The 42-year-old reality star filed for divorce in February 2021 after seven years of marriage and was declared legally single earlier in 2022.
Following their split, the Skims businesswoman went on to date Saturday Night Live comedian Pete Davidson for 10 months, with their romance ending in August.
She is now single, while Kanye embarked on a whirlwind romance with actress Julia Fox and was later in a relationship with social media star Chaney Jones, 25, having compared his split from Kim to the death of Queen Elizabeth II.
Posting on Twitter in all caps, he wrote: ‘London, I know how you feel, I lost my queen too.’