Singer Solbi revealed her bikini body.

Today, Solbi posted on her Twitter, "Everyone~ Solbi's book is finally out in bookstores. I'm going to COEX mall later too^^ I hope despite the heat your day will be filled only with laughter, and have a healthy summer. Solbi's Body Secret fighting!" along with a picture.

In the picture, Solbi is wearing a bikini. Though Solbi is making a shy face, she is confidently wearing a bikini.

Internet users who saw this commented, "Solbi really succeeded in her diet", "She got so much skinnier", "I can't see that well because of the sunlight", and "I hope her book sells a lot."

Solbi published a book titled "Solbi's Body Secret" which contains her diet stories of past 2 years.

Photo Credit: Solbi's Twitter