Wow! Where has all of the time gone!?
People can't get over how much viral sensations Sophia-Grace and Rosie have grown up.
The cousins appeared on Ellen when they were 5 and 8 years old. After performing an upbeat rendition of Nicki Minaj's 'Super Bass' they quickly became household names.
Now the girls have just celebrated their 15th and 18th birthdays!
"15 & 18 how did that happen?" Rosie wrote on her Instagram.
"Together since I was born, traveled the world together, never had a single argument and still by each others side! Big things to come and I can’t wait for you all to see!"
Crazy that it's been 10 years! You can relive the classic Ellen moment below...