K-pop star and actress IU recently left fans both amused and concerned after revealing that her height has decreased slightly over the past year.

During a casual chat with fans on a communication platform, IU was asked by one fan, "Unnie! What's your height these days?" The 31-year-old singer responded with unexpected honesty: "I was 163.2cm last year, but this year I shrunk to 162.7cm..."

Her candid admission quickly went viral, with fans commenting on how rare and refreshing it is for a celebrity to be so open about body changes, even small ones.

The five-millimeter difference became a hot topic, especially as IU has long been admired for her slim figure and delicate frame.

IU's current height adds clarity to past remarks from veteran actress Park Joon-geum, who once stated that she and IU wore the same size, 158cm and 43kg.

Although fans suspected that IU was smaller than her official profile, her most recent comment has confirmed that she is still around 162-163 cm, although maybe a bit shorter.

Famed for her petite frame, IU has previously discussed her low weight and her clothing size.

"At one point, I even wore size 33 and a half in children's clothes," she once shared on a variety show — a detail that has continued to astonish fans.

In a separate interview on the variety show Pinggyego earlier this year, IU opened up about her changing eating habits. "I used to love sweets so much, and I would gain weight mostly in my face," she said. "But at some point, I just stopped wanting to eat as much.

My appetite has reduced, and I think my stomach has gotten smaller too."

Fans have responded with a mixture of light-hearted amusement and genuine concern. Many praised IU for her openness and authenticity, while others expressed hope that she remains mindful of her health amid her busy schedule.

"IU never hides anything from us. It's both cute and a little worrying," one fan commented online.

IU, whose real name is Lee Ji-Eun, remains among Korea's most adored entertainers, having released chart-topping hits and appeared in numerous memorable acting roles.

Her brief yet endearing confession about her height is yet another reason fans love and appreciate her down-to-earth nature.