Who Is By2? Age, Biography and Wiki
By2 is a celebrated Singaporean pop duo formed by twin sisters Miko and Yumi. Born on March 23, 1992, they are currently 33 years old as of 2025. By2 gained fame for their catchy tunes and dynamic performances, quickly establishing themselves as influential figures in the Mandarin pop music scene. Their journey began in 2006 when they signed with Universal Music and has since included a series of successful albums and numerous award nominations.
| Occupation | Pop Singer |
|---|---|
| Date of Birth | March 23, 1992 |
| Age | 33 Years |
| Birth Place | N/A |
| Horoscope | Aries |
| Country |
Popularity
By2's Popularity over time
Height, Weight & Measurements
As of 2025, both Miko and Yumi have maintained their health and fitness with impressive stats. They stand approximately 1.65 m (5 ft 5 in) tall and each weighs around 50 kg (110 lbs). Their body measurements are often noted for being proportionate and athletic, which they maintain through regular workouts and a balanced diet.
Family, Dating & Relationship Status
As talented artists in the public eye, both sisters have been discreet about their personal lives. However, speculation about their relationships has been a recurring theme among fans and the media. By 2025, it's reported that Miko is dating local entrepreneur Alex Tan, while Yumi has chosen to focus on her career, keeping her relationship status private. Their family support remains a significant backbone to their careers, with their parents being key figures in their early development as artists.
From a young age, both sisters were exposed to performing arts and learned the violin, piano, ballet and many other styles of dancing. As they reached adolescence, their passion for performing grew and they picked up more performing skills.
They joined the Chinese Folk Dance in their secondary school, Yio Chu Kang Secondary School, as part of their co-curricular activity. These sisters have been given different hairstyles for easy identification due to their uncanny resemblance. However, they claimed to be different in terms of personality.
Miko, Bai Wei-Fen has been described as more introverted and quiet while her sister, Yumi, Bai Wei-Ling, has been described as a more extroverted and outgoing person. They moved to Taiwan in 2007 to further their career. At the age of 13, both of them joined the Ocean Butterflies' Music Forest's V Singer ("非常歌手") training course.
The course aims to teach aspiring singers how to perform on stage and techniques in singing and dancing. Their father died of cancer in 2007 when Miko and Yumi were 15 years old.
Their father had hoped that Miko and Yumi will not give up on their dreams under any circumstances, thus encouraging them to actively pursue their aspiration of becoming singers. They graduated from the course clinching a "Best Costume Design" award. Billy Koh of Ocean Butterflies Music noticed their talent and gave them a 10-year record deal.
They were sent to other regions such as Japan, China and Taiwan to gain exposure to different forms of dance styles, as well as to enhance vocal training and stage presence.
Net Worth and Salary
In 2025, By2's net worth is estimated to be around $5 million combined. Their earnings stem from various sources including music sales, concerts, endorsements, and television appearances. Each sister reportedly earns an average of $200,000 annually, bolstered by a growing following and diversifying income streams such as merchandise sales.
Career, Business and Investments
By2's career has evolved significantly over the years. While they initially gained fame as pop singers, they've diversified into other avenues, including acting and brand endorsements. In recent years, the duo has launched their own clothing line, reflecting their fashion sense and appealing to their younger audience. They are also known to invest in local startups and ventures, demonstrating their business acumen beyond the music industry.
By2 gained attention at the start of their career with their first two studio albums (NC 16 and Twins), but it was not until 2010 when they released their third studio album, Grown Up, for which gained them significant popularity, with the album topping Taiwan's music chart, "G-Music" and several music charts in China.
The album was responsible for 33 percent sales of albums in the Chinese market and 18 percent sales of albums in Taiwan during the week of 9 to 15 April 2010.
Social Network
By2 has a robust presence across various social media platforms, utilizing them to engage with their fans and promote their work. As of 2025, they boast millions of followers on Instagram, Twitter, and Facebook. Their social media accounts are filled with updates on new music, personal insights, and glimpses of their daily lives, allowing fans a closer interaction with their idols.
By2 released their sixth studio album, Cat and Mouse, on 28 July 2015. The duo appeared on various TV shows in China to promote the album. The twins also made numerous stops all around China to perform songs from their album.
On 26 November 2015, not too long after an album release, By2 released a new single for the Chinese-drama Miss Unlucky, on the Ocean Butterflies Music's official YouTube Channel, titled "Big Mouth". This single became the opening credits song for the drama. In January 2019, By2 revealed that they and Ocean Butterflies had parted ways.
Education
Both Miko and Yumi pursued their education alongside their music careers, showcasing a commitment to personal growth and learning. They attended international schools in Singapore and later enrolled in university courses, focusing on arts and business, which have greatly influenced their perspectives in their entertainment careers. Their education has been instrumental in shaping their professional paths and business ventures.
