Ariana Grande has added 40 new concert dates for her Honeymoon Tour this summer.

The 21-year-old pop star announced the news via her official Twitter page and mobile app Fahlo. The tour's summer run will kick off on July 16, 2015, at Amalie Arena in Tampa and will end on October 15 at El Paso County Coliseum in El Paso, Texas, Billboard wrote. Tickets for the summer leg of the tour go on sale on Saturday, April 4 at LiveNation.com.

Here's part of the list of cities and venues, provided by Billboard. All dates and locations may still be changed, the music site reminded.

July 16, Tampa, FL Amalie Arena 

July 18, Ft Lauderdale, FL BB&T Center

July 21, Charlotte, NC Time Warner Cable Arena

July 23, Louisville, KY KFC Yum! Center

July 25, Washington, DC Verizon Center

July 26, Hershey, PA Hersheypark Stadium

July 29, Philadelphia, PA Wells Fargo Center

July 31, Albany, NY Times Union Center

August 2, Uncasville, CT Mohegan Sun Arena

August 4, Manchester, NH Verizon Wireless Arena

August 6, Montreal, QC Bell Centre

August 7, Ottawa, ON Canadian Tire Centre

August 9, Toronto, ON Air Canada Centre

August 29, Las Vegas, NV Mandalay Bay Events Center

August 31, Fresno, CA Save Mart Center

September 2, Boise, ID Taco Bell Arena

September 4, Portland, OR Moda Center

September 6, Sacramento, CA Sleep Train Arena

September 8, Mountain View, CA Shoreline Amphitheatre

September 9, Chula Vista, CA Sleep Train Amphitheatre

September 11, Los Angeles, CA Staples Center

September 18, Houston, TX Toyota Center

September 20, Birmingham, AL BJCC Arena

September 22, Nashville, TN Bridgestone Arena

September 24, Raleigh, NC PNC Arena

September 26 Brooklyn, NY Barclays Center

September 29, Grand Rapids, MI Van Andel Arena

October 2, Chicago, IL United Center

October 4, St Louis, MO Scottrade Center

October 6, Wichita, KS INTRUST Bank Arena

October 7, Tulsa, OK BOK Center

October 9, New Orleans, LA Smoothie King Center

October 11, Dallas, TX American Airlines Center

October 13, Austin, TX Frank Erwin Center

October 15, El Paso, TX El Paso County Coliseum

Set to accompany Grande as the summer tour's special guest star is Prince Royce, Billboard noted. The "Stuck on a Feeling" singer is also about to release his English-language debut album. The concert tour will also have international dates, such as London, France, Germany, Italy, and Spain.

Ariana's duet with Justin Bieber

On Saturday night, March 28, Justin Bieber joined Grande on the Miami stage for a duet of the former Nickelodeon star's "Love Me Harder" hit single, E! News reported. The Canadian crooner took over the parts originally sang by The Weeknd, and messed up some of the lyrics.

"So I feel bad, I forgot the words, Ariana," Bieber told the songstress while performing at the American Airlines arena, as quoted by E! News. "I've been trying to memorize them backstage for like an hour!"

Grande, however, wasn't upset about Bieber messing up her song, the news outlet noted. She even had two more duets with her fellow pop singer, particularly on his tracks titled "All That Matters" and "As Long As You Love Me," the last of which saw Grande taking over the rap verse originally performed by her current boyfriend Big Sean.

Ariana Grande Teases 'Scream Queens' Role

Just recently, Grande teased about her recurring role in the upcoming Fox series "Scream Queens" by Ryan Murphy. In a photo she posted on her Instagram page, the pop star was seen winking at the camera while blowing a big bubble. She captioned the snapshot with: "@ screem queens."

"Scream Queens," which also stars Emma Roberts, Lea Michele, Keke Plamer, and Nick Jonas, is currently shooting in New Orleans, according to MTV. The show will reportedly center on "a college campus struck by a series of murders and a group of sorority girls who find themselves in the middle of it all."

The series will premiere in the fall and, series creator Murphy said it will follow a "murder mystery" format with someone getting "knocked off" every week, MTV noted.