So curious...Is Khia (My Neck, My Back) & Khia Philips (KP & Envyi)the same person?

I just realized they have the same name and look so similiar to each other and is it just me or they the same person. Remember "Swing My Way by KP & Envyi??? I was browsing 90s music and came across them. Khia Philips is skinny in the video from the 90s, and Khia is uh, much thicker. Hmmmmmm I got so curious and can't find the results.HMMMM?????? I wonder??