News Surprising Celebrity Relatives By ETonline Staff 3:24 PM PST, February 15, 2013 Who knew Madonna and Lady Gaga were related? According to a celebrity genealogist, the two stars share more than pop icon status with each other—they're ninth cousins, once-removed! Pics--Adorable Tots: Celebs and Their Cute Kids!Interestingly enough, Mother Monster isn't the only celebrity to share a family tree with Madge. The legendary performer is also distantly related to singers Gwen Stefani and Celine Dion. Click the video for more famous connections including Justin Bieber, Kate Middleton and Jason Sudekis!