The Lovely Boylan Sisters were a close harmony group who in the 1930s sang You're Never Fully Dressed Without A Smile in the Oxident Hour of Smiles alongside Bert Healy, advertising for Oxident toothpaste. As the name implies, they appear to be a parody of The Andrews Sisters, a close-harmony group who became popular from the 1930s through the early 50s.
The sisters did not appear in the 2014 modern-day reboot.
- The sisters are hinted to be quadruplets. Since the names are rhyming. But it doesn't mean there rhyming doesn't mean there actually sisters. That could possibly be there names since birth and just became friends. They’re just called sisters because their names sound alike.