Fergie marked her 50th birthday on Thursday, March 27, with a letter dedicated to her younger self on Instagram.

As Fergie succinctly told People in 2017 ... didn't get along so great and didn't want to do the same thing to our kid. [We] had to be a positive example for Axl," he explained.

I idolized Fergie as a kid, so this is so full-circle for me, it's crazy." The "First Class" and "Glamorous" mash-up marked Harlow's first solo VMAs performance and second after rapping "Industry ...