The pop singer and passionate Democrat sent out the tweet urging President Barack Obama and his aides to get organized or risk losing November's election to Republican Romney, who is a Mormon.
Cher's tweet said: "I Feel if he (Obama) doesn't get all his DUCKS IN A ROW we'll b forced 2 listen 2Uncaring Richy Rich! The whitest man in MAGIC UNDERWEAR in the WH (White House)."
Some news agencies reported that LDS leaders were upset over the reference to the garment won by faithful adult members of the church to remind them of sacred temple ordinances.
ABC 4 called a representative for the Church who said no LDS leaders ever issued a response to the tweet, nor would they be expected to.
Several people claiming to be Mormons were upset with Cher for making the remark, and responded directly to Cher via Twitter. One person called her an "anti-Mormon bigot."
Referring to the garment as "magic" is considered a derogatory slur by many faithful members of the church.
Cher is not the first prominent figure to catch heat over a tweet about the garments.
In February during a GOP primary debate, New York Times columnist Charles Blow tweeted: "Let me just tell you this Mitt "Muddle Mouth": I'm a single parent and my kids are *amazing*! Stick that in your magic underwear."
Blow later apologized, saying, "Btw, the comment I made about Mormonism during Wed.'s debate was inappropriate, and I regret it. I'm willing to admit that with no caveats."
A Buzzfeed.com article described Mormon garments as "...a rough equivalent of Jews' yarmulkes or tzitzit."
Buzzfeed's article also noted:
"It's difficult to imagine a Times writer making a similar joke about a Jewish politician."