Ariana Grande Performs During the MuchMusic Video Awards (MMVA) in Toronto
Ariana Grande performs during the MuchMusic Video Awards (MMVA) in Toronto, June 15, 2014. Reuters/Fred Thornhill

Ariana Grande has denied that the naked pictures in the biggest nude photo leak scandal are hers but the "Problem" singer says she loves to sleep naked. Grande says she sleeps nude because her grandmother has advises her to do the same!

''I sleep in very minimal clothing. My grandmother encourages nude sleeping," revealed Ariana to The 21-year-old has also announced her first headlining North American tour on Thursday. The petite songstress will kick off her 25-date Honeymoon tour on Feb. 25 at the Independence Event Center in Kansas City, Missouri, reveals

Grande, who is rumoured to be dating Big Sean, will make other tour stops in New York, Toronto, Detroit and will wind up her Live Nation promoted tour at the Honda Center in Anaheim, California on April 8.

The big announcement came from Grande's camp a week after she dropped her sophomore album "My Everything." The album has given Ariana three hits namely "Problem," featuring Iggy Azalea, "Break Free," featuring Zedd and "Bang Bang," with Jessie J and Nicki Minaj. The trancks have remained in the Top 10 positions at the Billboard countdown.

The tickets for Ariana Grande's North American tour go on sale September 20th on Live Nation. Meanwhile, check out the Honeymoon tour dates below:

Feb. 25, 2015: Kansas City, MO (Independence Event Center)

Feb. 28, 2015: Milwaukee, WI (BMO Harris Bradley Center)

March 01, 2015: Saint Paul, MN (Xcel Energy Center)

March 03, 2015: Chicago, IL (Allstate Arena)

March 05, 2015: Cleveland, OH (Quicken Loans Arena)

March 07, 2015: Detroit, MI (Joe Louis Arena)

March 08, 2015: Toronto, ON (Air Canada Centre)

March 10, 2015: Pittsburgh, PA (Petersen Events Center)

March 12, 2015: Philadelphia, PA (Wells Fargo Center)

March 14, 2015: Uncasville, CT (Mohegan Sun Arena)

March 15, 2015: Boston, MA (DCU Center)

March 17, 2015: Washington, DC (Patriot Center)

March 20, 2015: New York, NY (Madison Square Garden)

March 24, 2015: Atlanta, GA (Philips Arena)

March 26, 2015: Orlando, FL (Amway Center)

March 28, 2015: Miami, FL (American Airlines Arena)

March 31, 2015: San Antonio, TX (AT&T Center)

April 01, 2015: Dallas, TX (American Airlines Center)

April 03, 2015: Houston, TX (Toyota Center)

April 06, 2015: Phoenix, AZ (US Airways)

April 08, 2015: Los Angeles, CA (The Forum)

April 10, 2015: Anaheim, CA (Honda Center)

April 12, 2015: San Jose, CA (SAP Center)

April 14, 2015: Seattle, WA (KeyArena)

April 16, 2015: Vancouver, BC (Pepsi Live at Rogers Arena)