Demi Lovato fangirls over Kelly Clarkson's cover of 'Cool for the Summer,' says it's the 'best bday gift ever'

Kelly Clarkson Covers Demi Lovato and It's Amazing -- Watch!

It's been quite an exciting day for fans of Kelly Clarkson and Demi Lovato. As many know, the two powerhouse vocalists are super tight and supportive of each other's work. In fact, Lovato even considers Clarkson her idol ... and last night Clarkson admitted she considers Lovato, "one of her girls."

Early on last night, at the Staples Center arena in LA, 33-year-old Clarkson gushed over Lovato before performing her own rendition of "Cool for the Summer" from the fan request segment of her tour.



Clarkson also revealed that she's pregnant (!) with her second child during an emotional performance of the title track from her "Piece By Piece" album. The singer broke down and had to reassure her fans that she was simply hormonal from the pregnancy. Naturally, her fans burst into thunderous applause.

In all, the night turned out to be quite a special event, but it also happens to be Lovato's 23rd birthday today. The pop star woke up to the best birthday news ever as her biggest inspiration just covered one of her songs. Lovato took to Twitter this morning and fangirled over the news to her 30 million followers.

See her tweet below:



Watch Kelly's cover of "Cool for the Summer" below:



See Demi talk about Kelly and watch the first time they sang together:



Click through for photos of Demi Lovato through the years:

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Demi Lovato through the years
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Demi Lovato fangirls over Kelly Clarkson's cover of 'Cool for the Summer,' says it's the 'best bday gift ever'
WASHINGTON, DC - MARCH 24: Demi Lovato performs onstage at March For Our Lives on March 24, 2018 in Washington, DC. (Photo by Paul Morigi/Getty Images for March For Our Lives)
Singer Demi Lovato performs during KIIS-FM Wango Tango concert at StubHub Center in Carson, U.S., May 14, 2016. REUTERS/Mario Anzuoni
Singer Demi Lovato arrives at the Metropolitan Museum of Art Costume Institute Gala (Met Gala) to celebrate the opening of "Manus x Machina: Fashion in an Age of Technology" in the Manhattan borough of New York, May 2, 2016. REUTERS/Eduardo Munoz
Singer Demi Lovato poses at the 2016 iHeartRadio Music Awards in Inglewood, California, April 3, 2016. REUTERS/Danny Moloshok
Singer Demi Lovato arrives at the 58th Grammy Awards in Los Angeles, California February 15, 2016. REUTERS/Danny Moloshok
Singer Demi Lovato arrives at the 2015 American Music Awards in Los Angeles, California November 22, 2015. REUTERS/David McNew TPX IMAGES OF THE DAY
WEST HOLLYWOOD, CA - AUGUST 18: Demi Lovato attends the Samsung launch party on August 18, 2015 in West Hollywood, California. (Photo by Jason LaVeris/FilmMagic)
NEW YORK, NY - JUNE 25: Demi Lovato visits 'The Elvis Duran Z100 Morning Show' at Z100 Studio on June 25, 2015 in New York City. (Photo by Robin Marchant/Getty Images)
LOS ANGELES, CA - JULY 05: Singer Demi Lovato performs at 102.7 Kiis FM's Cool For The Summer' Pool Party at the WaterMarke Tower on July 5, 2015 in Los Angeles, California. (Photo by Michael Buckner/Getty Images)
NEW YORK, NY - JUNE 06: Demi Lovato performing on the Mudd Stage at Digifest on June 6, 2015 in New York City. (Photo by Craig Barritt/Getty Images for MUDD)
SANTA MONICA, CA - OCTOBER 08: Singer/actress Demi Lovato attends the Vevo CERTIFIED SuperFanFest presented by Honda Stage at Barkar Hangar on October 8, 2014 in Santa Monica, California. (Photo by Jason Kempin/Getty Images for VEVO)
TAMPA, FL - DECEMBER 22: Demi Lovato performs onstage during 93.3 FLZ’s Jingle Ball 2014 at Amalie Arena on December 22, 2014 in Tampa, Florida. (Photo by Tim Boyles/Getty Images for iHeartMedia)
LOS ANGELES, CA - JANUARY 20: President of Island Records David Massey (L) and Demi Lovato celebrate Nick Jonas' song 'Jealous' being the #1 At Top 40 radio hit at The Ivy on January 20, 2015 in Los Angeles, United States. (Photo by Charley Gallay/Getty Images for Island Records)
TAMPA, FL - DECEMBER 22: Demi Lovato performs onstage during 93.3 FLZ’s Jingle Ball 2014 at Amalie Arena on December 22, 2014 in Tampa, Florida. (Photo by Gerardo Mora/Getty Images for iHeartMedia)
SANTA MONICA, CA - OCTOBER 08: Recording artist Demi Lovato performs onstage during the Vevo CERTIFIED SuperFanFest presented by Honda Stage at Barkar Hangar on October 8, 2014 in Santa Monica, California. (Photo by Christopher Polk/Getty Images for Vevo)
INGLEWOOD, CA - AUGUST 24: Singer Demi Lovato attends the 2014 MTV Video Music Awards at The Forum on August 24, 2014 in Inglewood, California. (Photo by Christopher Polk/Getty Images for MTV)
SUNRISE, FL - DECEMBER 20: Demi Lovato attends Y100’s Jingle Ball 2013 Presented by Jam Audio Collection at BB&T Center on December 20, 2013 in Miami, Florida. (Photo by Gustavo Caballero/Getty Images for Clear Channel)
LOS ANGELES, CA - DECEMBER 16: Singer Demi Lovato performs onstage during 'VH1 Divas' 2012 at The Shrine Auditorium on December 16, 2012 in Los Angeles, California. (Photo by Kevin Winter/Getty Images)
LOS ANGELES, CA - JANUARY 11: Singer Demi Lovato arrives at the 2012 People's Choice Awards held at Nokia Theatre L.A. Live on January 11, 2012 in Los Angeles, California. (Photo by Jason Merritt/Getty Images)
LOS ANGELES, CA - JANUARY 11: Singer Demi Lovato arrives at the 2012 People's Choice Awards held at Nokia Theatre L.A. Live on January 11, 2012 in Los Angeles, California. (Photo by Jason Merritt/Getty Images)
UNIVERSAL CITY, CA - AUGUST 07: Singer/actresses Demi Lovato (L) and Selena Gomez arrive at the 2011 Teen Choice Awards held at the Gibson Amphitheatre on August 7, 2011 in Universal City, California. (Photo by Jason Merritt/Getty Images)
TINLEY PARK, IL - AUGUST 06: Demi Lovato attends the Summer Camp Rock 2 Concert Tour kick off at First Midwest Bank Amphitheatre on August 6, 2010 in Tinley Park, Illinois. (Photo by Barry Brecheisen/Getty Images for Juicy Juice)
LOS ANGELES, CA - JANUARY 06: Actress Demi Lovato poses in the press room during the People's Choice Awards 2010 held at Nokia Theatre L.A. Live on January 6, 2010 in Los Angeles, California. (Photo by Jason Merritt/Getty Images for PCA)
LOS ANGELES, CA - MARCH 28: Actress Demi Lovato arrives at Nickelodeon's 2009 Kids' Choice Awards at UCLA's Pauley Pavilion on March 28, 2009 in Westwood, California. (Photo by Kevin Winter/Getty Images)
NEW YORK - JUNE 11: Actress Demi Lovato attends the premiere of 'Camp Rock' on June 11, 2008 in New York. (Photo by Scott Gries/Getty Images)
LOS ANGELES, CA - SEPTEMBER 07: Singer Demi Lovato arrives at the 2008 MTV Video Music Awards at Paramount Pictures Studios on September 7, 2008 in Los Angeles, California. (Photo by Frederick M. Brown/Getty Images)
BIRMINGHAM, ENGLAND - JUNE 29: Demi Lovato performs on stage during her Tell Me That You Love Me tour at Arena Birmingham on June 29, 2018 in Birmingham, England. (Photo by Joseph Okpako/WireImage)
LONDON, ENGLAND - JUNE 25: Demi Lovato performs live on stage at The O2 Arena on June 25, 2018 in London, England. (Photo by Simone Joyner/Getty Images)
LISBON, PORTUGAL - JUNE 24: Demi Lovato performs on the Mundo stage at day two of Rock in Rio Lisbon on June 24, 2018 in Lisbon, Portugal. (Photo by Pedro Gomes/Redferns)
Demi Lovato and Roman Kemp in the on air studio during Capital's Summertime Ball with Vodafone at Wembley Stadium, London. PRESS ASSOCIATION Photo. This summer's hottest artists performed live for 80,000 Capital listeners at Wembley Stadium at the UK's biggest summer party. Performers included Camila Cabello, Shawn Mendes, Rita Ora, Charlie Puth, Jess Glyne, Craig David, Anne-Marie, Rudimental, Sean Paul, Clean Bandit, James Arthur, Sigala, Years & Years, Jax Jones, Raye, Jonas Blue, Mabel, Stefflon Don, Yungen and G-Eazy. Picture date: Saturday June 9, 2018. Photo credit should read: Lauren Hurley/PA Wire (Photo by Lauren Hurley/PA Images via Getty Images)
Demi Lovato performs on stage during Capital's Summertime Ball with Vodafone at Wembley Stadium, London. (Photo by Isabel Infantes/PA Images via Getty Images)
LAS VEGAS, NV - MAY 20: Demi Lovato arrives at the 2018 Billboard Music Awards at MGM Grand Garden Arena on May 20, 2018 in Las Vegas, Nevada. (Photo by Steve Granitz/WireImage)
WOODLAND HILLS, CA - MAY 18: Demi Lovato (R) and fan attend the Demi Lovato visits Fabletics at The Village at Westfield Topanga on May 18, 2018 in Woodland Hills, California. (Photo by Ari Perilstein/Getty Images for Fabletics)
Demi Lovato performs during March for Our Lives to demand stricter gun control laws on Saturday, March 24, 2018, in Washington, D.C. (Mike Stocker/Sun Sentinel/TNS via Getty Images)
NEW YORK, NY - MARCH 22: Singer Demi Lovato visits the SiriusXM Studios on March 22, 2018 in New York City. (Photo by Cindy Ord/Getty Images)
NEW YORK, NY - MARCH 22: Singer Demi Lovato visits the SiriusXM Studios on March 22, 2018 in New York City. (Photo by Cindy Ord/Getty Images)
NEW YORK, NY - MARCH 23: Demi Lovato departs their hotel on March 23, 2018 in New York City. (Photo by Gotham/GC Images)
NEW YORK, NY - MARCH 16: Demi Lovato performs onstage during the 'Tell Me You Love Me' World Tour at Barclays Center of Brooklyn on March 16, 2018 in New York City. (Photo by Kevin Mazur/Getty Images for Philymack)
TORRANCE, CA - JANUARY 27: Demi Lovato visits Fabletics at Del Amo Fashion Center on January 27, 2018 in Torrance, California. (Photo by Rachel Murray/Getty Images for Fabletics)
ROSEMONT, IL - DECEMBER 13: Demi Lovato attends 103.5 KISS FM's iHeartRadio Jingle Ball 2017 on December 13, 2017 in Rosemont, Illinois. (Photo by Robin Marchant/FilmMagic)
LOS ANGELES, CA - OCTOBER 11: Youtube's global head of original content Susanne Daniels (L) and Demi Lovato attend the 'Demi Lovato: Simply Complicated' YouTube premiere at The Fonda Theatre on October 11, 2017 in Los Angeles, California. (Photo by Jeff Kravitz/FilmMagic for YouTube)
LOS ANGELES, CA - MARCH 11: Singer Demi Lovato arrives at the Nickelodeon's 2017 Kids' Choice Awards at USC Galen Center on March 11, 2017 in Los Angeles, California. (Photo by Jon Kopaloff/FilmMagic)
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