The ’90s hair accessory is having a resurgence thanks to “Love Story: John F. Kennedy Jr. & Carolyn Bessette.” But doctors have a warning.

Ryan Murphy’s series about the Kennedy heir and style icon has risen above nostalgia-bait to become a ratings blockbuster

The ’90s hair accessory is having a resurgence thanks to “Love Story: John F. Kennedy Jr. & Carolyn Bessette.” But doctors have a warning.