For example, Rimes claims to take over 40 pills a day as part of staying fit.
"I take like 20 pills in the morning and 20 at night. Fish oil, prenatal vitamins, probiotics, biotin," Rimes explained. "I have an herbalist I work with who has put me on a bunch of different things. I'm very strict about making sure I take them."
Photos of LeAnn Rimes from throughout her career:
LeAnn Rimes over the years
LeAnn Rimes says she takes 40 pills a day, owns her own spray tan machine
Country music star LeAnn Rimes performs in Dallas on Sunday, Sept. 22, 1996. Rimes, 14, the youngest artist ever nominated for a Country Music Association award will sing her hit song "Blue" for a nationwide audience next Wednesday at the 30th annual Country Music Association awards. (AP Photo/LM Otero)
LeAnn Rimes holds her Best New Artist and Best Female Country Vocal Performance awards during the 39th Annual Grammy Awards in New York Wednesday evening, Feb. 26, 1997. (AP Photo/Kathy Willens)
LeAnn Rimes accepts the Female Star of Tomorrow award at the TNN-Music City News Country Awards show in Nashville, Tenn., on Monday, June 16, 1997. (AP Photo/Chris Berkey)
Country singer LeAnn Rimes jokes with a rose as she arrives at the Country Music Association awards show Wednesday, Sept. 23, 1998, in Nashville, Tenn. (AP Photo/Michael S. Green)
Host LeAnn Rimes opens the show with a song making fun of her experiences over the past year at the 36th annual Academy of Country Music Awards Wednesday, May 9, 2001, in Los Angeles. (AP Photo/Kevork Djansezian)
Singer LeAnn Rimes poses in the office at Mosaic Management in Nashville, Tenn., Wednesday, Jan. 12, 2005. Rimes has a Top 10 country single with "Nothin 'Bout Love Makes Sense," a light, bouncy tune from her new album "This Woman," which comes out Jan. 25. (AP Photo/John Russell)
LeAnn Rimes, left, and Smokey Robinson sing a duet to Elton John during the 14th Annual Society of Singers Awards, where John received the Ella Award, Monday, Oct. 10, 2005, in Beverly Hills, Calif. (AP Photo/Rene Macura)
LeAnn Rimes, center, poses with her husband Dean Sheremet, left, and Nicky Hilton before the Zac Posen fall 2006 show, Thursday, Feb. 9, 2006, during Fashion Week in New York. (AP Photo/Diane Bondareff)
LeAnn Rimes arrives for the Clive Davis Pre-Grammy Party in Beverly Hills, Calif., Saturday, Feb. 10, 2007. The 49th Annual Grammy Awards will air live on Sunday, Feb. 11 at the Staples Center in Los Angeles. (AP Photo/Danny Moloshok)
LeAnn Rimes and husband Dean Sheremet arrive for the 49th Annual Grammy Awards on Sunday, Feb. 11, 2007, in Los Angeles. (AP Photo/Matt Sayles)
Reba McEntire, right, performs with LeAnn Rimes at the 41st Annual Country Music Association Awards, Wednesday, Nov. 7, 2007, in Nashville, Tenn. (AP Photo/Mark Humphrey)
Singer LeAnn Rimes joins "all" small and mighty,an eco-friendly laundry detergent at the Children's Museum of Manhattan to teach kids the little things that can make a big difference for the environment, Thursday, Nov. 15, 2007, in New York. (AP Photo/Peter Kramer)
Singer LeAnn Rimes poses in the press room at the 2008 CMT Awards, Monday, April 14, 2008 in Nashville, Tenn. (AP Photo/Evan Agostini)
LeAnn Rimes and Dean Sheremet arrive at the 43rd Annual Academy of Country Music Awards on Sunday, May 18, 2008, in Las Vegas. (AP Photo/Isaac Brekken)
Entertainer LeAnn Rimes performs a tribute song for Brenda Lee, prior to Lee accepting the Cliffie Stone Pioneer Award during the first-ever ACM Honors, an evening dedicated to recognizing the special honorees and non-televised categories from the 43rd Annual Academy of Country Music Awards, which was held earlier this year, as they gathered at the Musicians Hall of Fame and Museum, Wednesday, Sept. 17, 2008, in Nashville, Tenn. (Bill Waugh / AP Images for ACM)
Musician LeAnn Rimes watches the Los Angeles Lakers and Houston Rockets play during Game 2 of a second-round NBA playoff series in Los Angeles on Wednesday, May 6, 2009. The Lakers won 111-98. (AP Photo/Matt Sayles)
LeAnn Rimes, left, and Jamie-Lynn Sigler attend the Monique Lhuillier Spring 2012 fashion show during Fashion Week in New York, Saturday, Sept. 10, 2011. (AP Photo/Diane Bondareff)
LeAnn Rimes arrives at the 45th Annual CMA Awards in Nashville, Tenn. on Wednesday, Nov. 9, 2011. (AP Photo/Evan Agostini)
FILE - This April 1, 2012 file photo shows country singer LeAnn Rimes, right, and her husband Eddie Cibrian at the 47th Annual Academy of Country Music Awards in Las Vegas. The couple will have a six-episode series on VH1, scheduled to debut either later this year or in early 2014 and tentatively called âLeAnn & Eddie.â (AP Photo/Isaac Brekken, File)
LeAnn Rimes attends "The X Factor" season finale at CBS Television City on Thursday, Dec. 20, 2012, in Los Angeles. (Photo by Jordan Strauss/Invision/AP)
American country singer LeAnn Rimes poses for a portrait in promotion of her upcoming album "Spitfire," on Monday, June 10, 2013 in New York. (Photo by Amy Sussman/Invision/AP)
A light rain falls as LeAnn Rimes sings âAmazing Graceâ to prepare for her performance during the Let Freedom Ring ceremony on the steps of the Lincoln Memorial in Washington, Wednesday, Aug. 28, 2013, to commemorate the 50th Anniversary of the 1963 March on Washington for Jobs and Freedom. (AP Photo/Carolyn Kaster)
From left to right, singer LeAnn Rimes and actor Eddie Cibrian arrive on the red carpet for the world premiere of the feature film "The Best Man Holiday" at the TCL Chinese Theatre on Tuesday, Nov. 5, 2013 in Los Angeles. (Photo by Dan Steinberg/Invision/AP)
LeAnn Rimes arrives at the American Country Awards at the Mandalay Bay Resort & Casino on Tuesday, Dec. 10, 2013, in Las Vegas, Nev. (Photo by Chris Pizzello/Invision/AP)
Actor Eddie Cibrian and singer LeAnn Rimes arrive at the MusiCares 2014 Person of the Year Tribute on Friday, January 24, 2014 in Los Angeles. (Photo by Paul A. Hebert/Invision/AP)
LeAnn Rimes, left, and Eddie Cibrian attend the VH1 2014 Summer TCA - "LeAnn & Eddie" at the Beverly Hilton Hotel on Friday, July 11, 2014, in Beverly Hills, Calif. (Photo by Richard Shotwell/Invision/AP)
Eddie Cibrian, and from left, Jake Cibrian, Mason Cibrian, and LeAnn Rimes arrive at The Grove's 12th Annual Christmas Tree Lighting Spectacular Presented By Citi at The Grove on Sunday, November 16, 2014 in Los Angeles, California. (Photo by John Shearer/Invision for Caruso Affiliated/AP Images)
LeeAnn Rimes looks to Billy Joel after performing during a tribute concert to Billy Joel, the recipient of the Library of Congress Gershwin Prize for Popular Song, at DAR Constitution Hall in Washington, Wednesday, Nov. 19, 2014. (AP Photo/Carolyn Kaster)
Singer-songwriter LeAnn Rimes performs in concert as the opening act for Billy Joel at M&T Bank Stadium on Saturday, July 25, 2015, in Baltimore. (Photo by Owen Sweeney/Invision/AP)
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"People make so much fun of me and my bikinis, but I would walk around naked if I could because I was one big scab at one point!"
The singer also admitted that she's struggled with psoriasis since she was a little girl.
"I had to wear a lot of long pants or jeans and two or three pairs of pantyhose in the summertime," Rimes recounted. "It was a nightmare." To treat the condition, Rimes revealed that she takes additional medicine.
"I take a shot every two weeks, and I hate needles, but that's what I had to do to get my skin clear," she said. "I went through every type of treatment known to man. Now, I'm on Humira -- it was a shot in the dark, and thank god it worked. I do break out every so often, but I have topical stuff that I put on for that."
"It's been this liberating thing for me to be able to wear shorts and a bikini," Rimes explained. "People make so much fun of me and my bikinis, but I would walk around naked if I could because I was one big scab at one point!"
She also revealed how she keeps her bikini bod so evenly tan -- she owns her own tanning machine!
"My assistant, Kiki, and I love to spray tan so much, so we finally bought a machine and started to spray each other," she shared. "The machine is like $500, so we save so much money. We do it once or twice a week. It's like a car wash."
But tanning and clear skin aren't the only things that make her feel comfortable about walking around in a two-piece. She also works hard to stay fit and tone.
"I switch it up between circuit training, Pilates, boxing, and yoga every once in a while," Rimes said of her varied workout routine. "I also jump rope a lot when I'm on the road. That's one thing that I carry with me because you can do it wherever."