Little sister Lilie (Lotte Hanné) with long blonde hair wore all kinds of pigtails and other hairstyles. There are also some more girls, including red hair, short pigtails and buns.
I think first in a bit protruding pigtails with rubber rings. Pic 1 from ep 14 (season 2, s2e1). A bit later she wore a hat and regular pigtails. Also in ep 16 (pic 2).
In pic 3 she wore what I call “modern” style pigtails, which is partly plaited onto the head, so the pigtails are hanging free only at the lower part near the shoulders.
Redhaired Celina also in ep 16 next to I think other girls riding.
Looped pigtails (season 1) are shown in the main entry next to some other girls in later seaons. Lilie is very young in seasons 1+2 and I don’t like her here. Paulina is much better (currently rating 7).
Coming next: Die Klimaretter – Wer spart, gewinnt!