Rainbow's Ko Woo Ri Is Expecting Her First Child

Ko Woo Ri, best known as a member of the second-generation K-pop girl group Rainbow, is pregnant with her first child. The announcement came on April 1, 2026, during an appearance on MBC's long-running variety show Radio Star, and the story behind how the timing unfolded has quickly become one of the most talked-about moments in the episode.

Ko Woo Ri revealed she had taken a pregnancy test — and seen two lines — only to receive a call from the Radio Star production team the very next day. "I confirmed two lines on the pregnancy test, and the next day I got a call from Radio Star," she told the hosts, visibly delighting the studio audience. She was seven weeks pregnant at the time of recording and had already chosen a baby nickname: 복덩이, which translates loosely as "bundle of luck" or "little blessing."

A Fan-Favorite Idol Returns — With Big News

The Radio Star episode featured a "Loyalty Inducers" (충성 유발자) special, gathering celebrities who built massive followings among Korean military conscripts. Ko Woo Ri was a natural fit for this concept. During Rainbow's active years in the early 2010s, the group was beloved by soldiers stationed at bases across the country, and their hit song "A" became something of an anthem at military events.

Ko Woo Ri was particularly known for performing "A" with an enthusiasm that won her the informal title of "military idol" (군통령) — a fan-given designation recognizing her extraordinary popularity within the armed forces. She talked openly about the experience on Radio Star, noting that she would memorize each base's specific salute call before performances to make the shows feel personal. "I prepared carefully for each unit," she said, to warm applause from the studio.

The special also featured singer Cho Gapkyung, actress Chae Yeon, and Fromis_9 member Lee Chae Young, all of whom have similarly strong military fandoms. But Ko Woo Ri's double announcement — the rainbow comeback story combined with the pregnancy news — clearly dominated the episode's emotional arc.

Ko Woo Ri Now: Rainbow18 and Ambitious Goals

Before her pregnancy reveal, Ko Woo Ri was already making headlines for her revived entertainment activities. She recently formed Rainbow18, a sub-unit with fellow Rainbow member Cho Hyun-young, and the pair have been performing at events and music broadcasts with a renewed energy that has surprised many fans who had not expected to see them back in the spotlight so actively.

Ko Woo Ri spoke candidly about what the Rainbow18 journey has meant to her. "We went to events and so many people were happy to see us. They said it relieved their stress," she recalled, describing the gratitude she felt at the warm reception. The sub-unit has since performed at regular music broadcasts, a milestone that felt particularly meaningful for an artist who had stepped back from active idol life years earlier.

In typical Ko Woo Ri fashion, she shared her goals for 2026 with characteristic directness: "I've never once thought about becoming a star. But starting this year, I'm going to become a star." She even admitted she still hoped to perform at the popular outdoor water festival Waterpark (워터밤) — despite being pregnant — drawing laughs and admiration from the studio. Host Kim Gu-ra responded to her bold ambitions by pointing out her "aggressive makeup," which only added to the playful atmosphere that has always defined Ko Woo Ri's public persona.

Marriage, IVF, and a Dream Come True

Ko Woo Ri married a non-celebrity businessman — five years her senior — in October 2022. The couple had been open about their hopes to start a family, and Ko Woo Ri had previously shared on social media that she was undergoing fertility treatment. The pregnancy represents the fulfillment of something she had spoken about publicly and pursued through genuine effort.

She has also shared a baby dream (태몽) on her YouTube channel — a traditional Korean concept of a dream believed to predict something about an unborn child. Ko Woo Ri said she dreamed of a silver fish (은갈치), and then joked: "Is it Jang Wonyoung who is coming?" — a reference to the IVE member who is known for her tall, elegant presence. The comment landed as only Ko Woo Ri could make it: warm, self-aware, and genuinely funny. Her YouTube channel titled "Go! 우리" has become a space where she documents her life with a candor that fans have responded to enthusiastically.

A Viral Character — and the Real Ko Woo Ri Behind It

Part of what makes Ko Woo Ri such an engaging figure is the persona she has developed across social media over the years. Her "야한 말 빨리하는 아줌마" character — which roughly translates as "the lady who says naughty things really fast" — became a viral moment in Korean internet culture. What started as an improvised comedic character has stuck with her, with fans and even acquaintances now referring to her by the nickname.

She discussed the character's origin on Radio Star, explaining that it grew from an ad-lib she threw out during a recording that unexpectedly got an enormous reaction. The character has since taken on a life of its own, and Ko Woo Ri has leaned into it with humor and self-awareness. Even her husband has become part of the joke — she shared a "real episode" involving him and the character that left the studio in stitches, though she kept the specifics appropriately mysterious.

Fan Reactions and What Comes Next

News of her pregnancy spread quickly across Korean entertainment communities and beyond. Many fans who grew up with Rainbow celebrated the announcement as a reminder of how central second-generation idols had been to the K-pop landscape — and how much genuine affection remains for those artists even years after their groups' peak.

Others expressed delight at the particular quality of the timing: positive pregnancy test one day, a call from one of Korea's most storied variety shows the next. It reads, as many fans put it, like something out of a drama — one with a guaranteed happy ending. Comments flooded in expressing congratulations and excitement about the baby, with many fans noting that they could not think of a more fitting person to become a parent than someone whose warmth and humor have been so consistently on display.

Ko Woo Ri is expected to continue sharing updates with her followers throughout her pregnancy. Based on her track record, the journey ahead will likely be as entertaining as it is heartfelt. For a woman who declared this the year she would "become a star," the arrival of 복덩이 may turn out to be the most memorable debut of 2026.