Complex sentence: Rachel's popularity established her as the show's breakout character, who has since been named one the greatest television characters of all-time by several media publications, while the character's second season haircut spawned an international frenzy of its own.
Split into simpler sentences: Rachel's popularity established her as the show's breakout character, who has since been named one the greatest television characters of all-time by several media publications. The character's second season haircut spawned an international frenzy of its own.