The 77-year-old hitmaker was performing at the Grand Casino Arena in St. Paul, Minnesota on Wednesday, when he abruptly brought the show to an early close.
Lionel Richie left his fans concerned after he was forced to bring the first concert of his new tour to a halt after falling ill mid-performance on Wednesday.
The Simple Life veteran was commenting on Kate's Instagram post that featured an image from their evening out on Monday when they attended a Los Angeles premiere together.
The 18-year-old, whose dad is Good Charlotte singer Joel Madden, was showing off her dyed dark hair as she modeled a goth look made up of a strapless leather minidress with black boots.
The actress' daughter, whose full name is Harlow Winter Kate, celebrated her 18th birthday last month with a new look and name as she made the decision to start going by her middle name, Kate.
Nicole Richie's daughter has shared her first Instagram post since she revealed her new identity after changing her name and undergoing a dramatic transformation.