Various fellow K-Pop stars of 2NE1 attended their comeback concert in Seoul.

2NE1 staged their Welcome Back concert at the Olympic Hall in Olympic Park from October 4 to 6. This marked the K-Pop icon's first concert in 10 years.

As per report by Billboard Korea, numerous K-Pop stars were in attendance during the final day of the show including G-Dragon, Daesung, Jennie, WINNER's JINU, MINO, NewJeans, Stray Kids, and Boy Next Door. 

BABYMONSTER also became a guest performer at the show as 2NE1's opening act. 

Celebrity guests also gamely took on the "2NE1 Dance Challenge Time" including NewJeans, Big Bang’s Daesung, SEVEN, Yoon Do-hyun, Ro Hong-chul, Gummy, and Jung Yong-hwa. 

2NE1 expressed their gratitude to the fans who attended their reunion concert in Seoul.

"We’re so happy to gather together at this meaningful place," CL said as reported by Soompi.

"Olympic Hall is a very meaningful place to us. We had our first concert NOLZA here," Sandara added.

Park Bom described their reunion as a meaningful moment. "While preparing for the concert, I felt so grateful, and it was such a meaningful time. I’m so happy to greet everyone," she said.

"I just want to take the time today to say thank you again. Our unnies, I love you so much! Our BLACKJACKS, I love you!" Minzy remarked.

Sandara also took to social media to express her joy about this reunion concert.

"I'm just so thankful and so happy... It still feels like a dream and I can't sleep... But I have to go to sleep quickly for tomorrow's performance!!!! Good night everyone ♠️♥️ Let's play again tomorrow!!!" she posted on social media platform X on October 5 as per English translation by Google.

READ: 2NE1 kicks off ‘Welcome Back’ concert in Seoul

2NE1 performed their various hits in the concert including "Come Back Home," "Fire," "Clap," "I Am the Best," and "I Don't Care," among others.

After Seoul, the group is set to bring their Welcome Back concert to more stops in Asia including Kobe, Tokyo, Bangkok, Taipei, Hong Kong, Singapore, Manila, and Jakarta.