The 20-year-old pop star wore the traditional forehead decoration to perform "Come & Get It" on Ellen Tuesday (she taped it Monday), as well as on last night's Dancing with the Stars' elimination show.
E! News spoke with Douglas Overton Blue from the Vedanta Society of Southern California, a Hindu temple in Hollywood, to get his take on the situation.
"It's a free country. Hollywood will do this anyway," Blue tells E! News. "But we would prefer that they wouldn't use the bindi as a decoration because it has sacred meaning."
He explained, "A married woman wears this mark on her forehead as a symbol that she is trying to see God in her husband."
Blue noted that it is very deep and rich in metaphor and meaning and is viewed as something private.
Gomez has yet to tweet or issue any official response to the controversy.
—Reporting by Ruth O'Neill