“I don’t sweat, I sparkle” (or “I don’t sweat, I glisten/glow”) has been printed on many gift items, such as T-shirts, posters and gym bags. “I don’t sweat, I sparkle” has been cited in print since at least May-June 2011 and is the popular modern form of the saying.
 
“Ladies don’t sweat — they glow” was cited in print in 1941. “Ladies don’t sweat, they glisten” was cited in print in 1985.
 
   
Google Books
Out of the Frying Pan:
A Comedy in Three Acts
By Francis Swann
New York, NY: Samuel French
1941
Pg. 89:
DOTTIE. Ladies don’t sweat — they glow.
 
Google Books
Purpose and Place;
Essays on American Writers
By Douglas Grant
London: Macmillan; New York: St Martin’s Press
1965
Pg. 116:
Had the magnificent creature been white Mark Twain would have felt compelled to describe her in the tone of ‘ladies don’t sweat, they glow’.
 
15 January 1978, The Times-Picayune (New Orleans, LA), “Dee is ‘What’s Happening!!’” by Benjamin Morrison, TV Focus, pg. 24, col. 2:
“You know, ladies don’t sweat, they glow and I’ve been working hard.”
 
25 June 1980, Omaha (NE) World-Herald, “Fastest Female Miler Takes the Pain in Stride” by Alan Greenberg, pg. 3-J, col. 5:
Dick: Little girls don’t sweat. They glow.
 
Google News Archive
26 March 1982, Windsor (Ontario) Star, “Hemingway glows in Personal Best” by John Laycock, pg. B1, col. 2:
Women don’t sweat; they glow — at least at the movies.
 
Traditionally, any moisture staining the female form on screen was undignified, or compromising, or a voluntary sacrifice to save the family farm. Perspiration was the polite word, but movies preferred not to speak even it.
     
Google Books
The Methuselah Manual:
The 3% formula for staying young, healthy, and sexy
By David C. Gardner and Grace Joely Beatty
Windham, NH: American Training and Research Associates
1985
Pg. 52:
As a child I paid special attention to my mother’s statement that ladies don’t sweat, they glisten, and have studiously avoided all activities that produced anything faintly resembling sweat.
 
Google Books
Gym Psych:
The Insider’s Guide to Health Clubs
By Maury Z. Levy and Jay Shafran
New York, NY: Fawcett Columbine
1986
Pg. 108:
WHY YOU SWEAT
What’s that you say — women don’t sweat, they glow? Listen pal, sweat is a mixture of water, body salts, and acidic waste products. Glow that. Sweat is your body’s natural air-conditioning system.
 
4 January 1986, Atlanta (GA) -Constitution, “Mr. Personality,” pg. I22:
“And Ella said, `Pearl, I have you know I don’t sweat, I glisten.’ Pearl said, ‘All right, honey, you’re glistening like a pig.’”
 
Google News Archive
23 July 1995, Allegheny Times (Allegheny County, PA), “Excessive perspiration problem is the pits” by Jeff O’Brien, Sunday Times Magazine, pg. 3, col. 3:
Women don’t sweat. I know you’ve heard. They glisten. Well then, I don’t sweat either. I leak.
 
Google News Archive
Honey Does My Butt Make These Pants Look Big?
By Rebel Lowrey Covan
Pensacola, FL : Dockside Publications
2002
Pg. 22:
And to heck with the old saying, “Southern women don’t sweat, they glow (or glisten, depending on what version you’re hearing at the time).” Honey, I sweatl And I get really angry when I’m “glowing.” It’s like a never-ending hot flash.
   
Google Books
Africa
By Jamon Miller
New York, NY: iUniverse
2006
Pg. 40:
“I don’t sweat!” I said, holding him, “I glisten!”
     
Model Mayhem
Nihilus
Dec 17 07 07:45 pm
“I don’t sweat, I glisten.”
 
Chronicle Forums
ThatScaryChick
May. 29, 2009, 03:47 PM
I don’t sweat, I glisten. 😊
I would like to think I sparkle. :lol:
 
15 May 2011, Sacramento (CA) Bee, “Cycle Chic—style over speed,” pg. I1:
And here, on the (4-inch) heels of the last, came another: “I don’t sweat on the bike; I sparkle.” She was talking about the practicalities of “cycling chic” and how it’s not only acceptable but “fabulous” to dress to the nines while heading to a fancy dinner or just going around town running errands.
 
Twitter
megan kay‏
@mkayy_  
i don’t sweat, i sparkle. http://tumblr.com/xh62vhtw58
1:12 PM - 6 Jun 11
     
myfitnesspal
AGSawatzky
August 22, 2012 2:09 pm
(...)
I like the saying “I don’t sweat, I sparkle” 😊
 
The Huffington Post
5 Fitness Quotes That Are The Absolute Worst
Posted: 07/19/2013 8:36 am EDT
(...)
“I DON’T SWEAT, I SPARKLE.”
Actually, sweating is kind of the point.