Kitahara Momo was born on August 30, 2006 in Tokyo, Japan.
In early 2019, Kitahara took part in the Morning Musume '19 LOVE Audition and made it to the finals, but was not chosen to join the group.
On August 2, it was announced that Kitahara had joined Hello Pro Kenshuusei alongside eight other girls. They were introduced on September 8 at Hello! Project Kenshuusei Happyoukai 2019 9gatsu ~Kirameki~.
On May 29, Kitahara won the judge's happy character award at the Hello! Project Kenshuusei Happyoukai 2021 ~Haru no Koukai Jitsuryoku Shindan Test~ event for her performance of "Boogie Train '03".
She has a younger brother.
When Kitahara joined Hello Pro Kenshuusei, she was in her first year of middle school. As of April 2022, Kitahara is currently in her second year of high school.
Here is a list of nicknames that was used to refer to Kitahara Momo:
- Momomo (ももも): One of her nicknames as a Hello Pro Kenshuusei member.
- Momo-chan (ももちゃん): One of her nicknames as a Hello Pro Kenshuusei member.
- Momo (もも): One of her nicknames as a Hello Pro Kenshuusei member.
- Name: Kitahara Momo (北原もも)
- Nicknames: Momomo (ももも), Momo-chan (ももちゃん), Momo (もも)
- Birthdate: August 30, 2006
- Birthplace: Tokyo, Japan
- Blood Type: A
- Height: 157 cm (5 ft 1.8 in)?
- Western Zodiac: Virgo
- Eastern Zodiac: Dog
- Hello! Project Status:
- UP-FRONT PROMOTION Status:
- 2019-08-02: Member
- OCHA NORMA Member Color:
- Light Green
- Hello! Project Groups:
- [2020–2021] Hello Dream.
- [2019-] Hello! Project Station
- She has the same last name as voice actress and former Hello Pro Egg member Kitahara Sayaka.
- She would like to visit Sweden.
- She loves playing her harmonica and playing her guitar.
- She went to Hashida Honoka's middle school graduation ceremony to surprise her and gave her roses to congratulate her.
- She sent letters to other KSS members for Christmas by surprise.
- She is known for being very strong-willed and ambitious.
- The first thing she did after becoming OCHA NORMA's name annoucement was registering "OCHA NORMA" in her User Dictionary.
- She is a model for Aimmx.
- Her nickname "Momomo", comes from her favorite teacher who used to call her this when she was in elementary school.
- She was inspired to become an idol by Funaki Musubu of Oha Suta.