Series are various release waves of products. They are marked on the front of the box until Series Four, where the main drive of the line is instead prominent on the box.
Series may have internal sublines or "waves" (where items/availability is changed or adjusted) but dolls available remain the same along the Collector's Sheet for a full series.
- Pets - Series One - January 2019
- Pets - Series Two - Fall 2019
- HairDUDEables - Series One - Fall 2019
- JoJo Siwa D.R.E.A.M. Tour - Series One - 2019
- Shortcuts - Series One - Fall 2019
- Hairmazing - Fall 2019
- JoJo Siwa D.R.E.A.M. Tour - Series Two - January 2020
- Hairdorables Loves... - February 2020
- Shortcuts - Series Two - Early 2020
- HairDUDEables - Series Two - Early 2020
- Longest Hair Ever! - Summer 2020
- Comic Book Queen - SDCC Limited Edition