Singer IU and actress Yoo In Na were seen on a Europe trip together.

On Thursday, one online community forum were posted pictures of IU and Yoo. The pictures were taken by tourists in Europe who saw the two on a trip as well.

In the pictures, IU and Yoo are wearing an all-white outfit with big hats, matching like two sisters. In another picture, IU is looking around the surroundings.

The two became close through an entertainment program in 2010 and has been keeping their close friendship since then.