The reality is that Britney Spears isn't afraid to call out people who have wronged her in the past, both indirectly and astonishingly directly
Aside from her parents and sister Jamie Lynn Spears being frequent targets of her anger
She has named others who have hurt her in various ways, including ex-boyfriend Justin Timberlake
Fellow Mickey Mouse Club alum Christina Aguilera, and Kelly Clarkson more recently
Clarkson responded very on-brand after the singer recalled some insensitive comments she made back in 2008
In 2008, Kelly Clarkson appeared on Q100 Atlanta for an interview boosting publicity for her 2007 album Blackout
She sang "Womanizer" on The Kelly Clarkson Show after referring to that interview in a since-deleted Instagram caption
Britney Spears' callout was not addressed directly by Kelly Clarkson, so it could be argued that her "celebration" was a way of congratulating the pop icon