- She is close to many celebrities including Jay Park, Hyorin (SISTAR), Chemi (C-Real), Amber (F(x)), Min (Miss A), G.NA and Shin Bora
- Just like Hyorin (SISTAR), she got the nickname of Beyoncé of Korea
- For the 2012 MBC Gayo Daejaejun, she was in duet with Noh Ji Hoon on stage and they almost kissed.
- For the 2013 MBC Gayo Daejaejun, she shared a duet with Niel (Teen Top) on 4 Minutes, then sharing a glass kiss.
- She sang a duet with Hyorin (SISTAR) on the song Telephone at the 2013 KBS Gayo Daejun
- She likes muscular men and that they have a sense of humor.
- She has two dogs, a female named Somi and a male she just adopted Kangi.
- She confessed that her ideal guy is Himchan from B.A.P.
- In a Mu.BANK backstage she chose WooHyun as her favorite INFINITE, while Dongwoo had clarified just before that he liked Ailee.
- In July 2013, actor Park Ki Woong tweeted “Our Yejin is currently #1 on 8 different charts! Listen and give lots of love to Ailee’s ‘U&I’ to keep it on top^^ Ailee fighting!!!”, which causes a couple of stars to be suspicious of netizens. Ailee will claim that she never met him but that he would be a friend of her manager, and Ki Woong will eventually confess that it was her company that asked her to post this tweet.
- She confessed that she wanted to do We Got Married with Himchan (B.A.P)
- INFINITE’s Dongwoo chose Ailee as his ideal woman and her mother approved her as a beautiful girl.
- Her favorite INFINITE is Woohyun.
- For the 400th episode of Music Core on March 8, 2014, she performed Let It Go, the Korean version with Hyorin.
- She has a scar on her forehead.
- She is close to Yoo Ara (former member of Hello Venus group).
- She likes to eat meat, including Korean beef.
- She thinks that it is not difficult to be a solo artist but she said laughing that she feels lonely sometimes.
- She said she has bad eyesight.
- If she were to be part of a female group, it would be 2NE1.
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