Hailee is also used as a masculine given name in English. However, it's more common for females. So, I think that the "Gender" of this name should be updated from "Feminine" to "Feminine & Masculine".Source: https://en.m.wikipedia.org/wiki/Unisex_name
This was the first spelling of the name that I learned, since a girl in Kindergarten was named Hailee. To be honest, I think that it’s a very cute spelling, even if I do prefer Hailey, Haley, and Haleigh. If you like this cute and different spelling, I say go for it!
I'm a little inclined to pronounce it "Hi-lee" or like the word "highly". It's not the worst variant of Haley (which I'm not the biggest fan of anyways) but I don't really care for it.
The name Hailee was given to 289 girls born in the US in 2016.
― Anonymous User 6/6/2017
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Hailee Steinfeld is an American actress, model and singer. She first became known for her portrayal of Mattie Ross in True Grit (2010), for which she was nominated for the Academy Award for Best Supporting Actress, the Screen Actors Guild Award for Outstanding Performance by a Female Actor in a Supporting Role, and the BAFTA Award for Best Actress in a Leading Role. Thereafter, she appeared as Petra Arkanian in Ender's Game (2013), Juliet Capulet in Romeo & Juliet (2013), Violet Mulligan in Begin Again (2013), Zooey Renner in 3 Days to Kill (2014), and Nadine Fletcher in The Edge of Seventeen (2016), for which she received a Golden Globe Award nomination.
Hailee is a beautiful name. I named my daughter Hailee in 04. I know of no other person with this spelling. I wanted her name to be a little different. Her nickname has become "hailcat" which really fits her personality.
Source: https://en.m.wikipedia.org/wiki/Unisex_name