Ariana has a birthmark on her left shoulder (and her right cheek[source?]).
Ariana loves Mariah Carey, Celine Dion, Imogean Heap, and Whitney Housten (along with other artists).
Ariana has Vine, Keek, Instagram, Twitter, Tumblr and Facebook accounts.
Ariana is a huge "techno-junkie" and uses GarageBand to create remixes of her favorite songs using an Apple computer and a Boss looping station RC50, meant for guitars, but Ariana plugs her microphone in and uses her voice instead, seen on this video.
Ariana is a fan of the Harry Potter series. Coincidentally, there's a character named Ariana (Ariana Dumbledore) in the books.
Ariana loves swimming.
Eric Vetro is her vocal coach. He is also Katy Perry's vocal coach.
Ariana's favorite movies are 13 Going On 30, Bruce Almighty and American Beauty (along with many other classics).
Ariana used to collect stuffed animals, hockey pucks, and Halloween masks.
Ariana has a dimple on her left cheek.
Ariana's fan mail address is 265 S. Federal Hwy Suite 331 Deerfield Beach, FL 33441.
Ariana's favorite colors are periwinkle blue, marshmallow white, sea foam green, red and coral/pale pink.
Ariana was on BrainSurge with 130 points, allowing her to move onto the next round, being the only girl to compete. But then she lost, along with Carlos Pena (from Big Time Rush) and was the first one to slide down "The Brain Drain". The episode aired on April 21st, 2011.
Ariana is studying Spanish (which became affective as she made another version of The Way in Spanglish).
Ariana loves to wear dresses especially by American designer Kenley Collins.
Ariana loves Judy Garland and Audrey Hepburn.
Ariana has a talent for mimicking the speaking and singing voices of others, including but not limited to Britney Spears, Shakira, her co-star Liz Gillies, Katy Perry, The Little Mermaid, a laughing baby, a crying baby and a baby lamb "baaa-ing".
Ariana's height is 5' 2½" (1.59 m).
Ariana currently lives in L.A with her brother. Her house is over 100 years old and was previously owned by Francis Ford Coppola, the director of The Godfather. 
Ariana loves the restaurant Toast.
Ariana's first crush was Justin Timberlake (when she was three).
Ariana went to her first concert, a Katy Perry concert, in the summer of 2011.
Ariana says she can't stand it when you smile at a stranger and they don't smile back.
Ariana went to Washington, DC for the "Worldwide Day of Play 2011".
Ariana is hypoglycemic.
Jennette McCurdy accidentally made Ariana's phone number public. She said "Sorry Ariana".
On December 10, 2011, Ariana reached a million followers on Twitter. On October 1, 2013 she reached 10 million followers.
Ariana's first single, Put Your Hearts Up was released on the 12th December and went up to #59 on iTunes. Click here to download it. The music video came out February 14, 2012.
During an interview, Ariana confirmed that she hated "Put Your Hearts Up" and the video itself, calling it a "terrible first impression". She also revealed that the genre incorporated in the song wasn't the type of music she listens to.
Ariana put her hands in cement at Planet Hollywood, New York on December 22th, 2011.
Ariana was in a relationship with Australian Jai Brooks, from the Janoskians since August 2012. He flew across the world to meet Ariana and family in New York for New Years. In February 2013 they briefly broke up due to the long distance; however, less than a month later confirmed they are back together. On August 16, 2013, Ariana Grande and Jai Brooks broke up again.
Ariana went to two schools while growing up, Pine Crest School and North Broward Preparatory School .
Ariana said that she likes Demi Lovato's single called "Heart Attack". She also said that Demi sounded amazing in the song.
She's allergic to dark chocolate, but still eats it.
Ariana Grande met musician, Bruno Mars, at the MTV EMAs and claimed she "died a little inside" upon finally meeting her celebrity crush.
She now has three tattoos; a heart-shaped on her toe, “Mille Tendresse" on her neck, and "Bellissimas" on her side, which is stupid because she is a role model for children. Boy Ariana, pretty stupid huh?
Ariana broke three toes once because she slipped on Ophelia's pee while at a party.
On March 27, 2014 Ariana said she wanted her fanbase to be called "the loves" rather than "Arianators". Since then she frequently tweets to her fans calling them "my loves". 
She showed no signs of happiness after winning an award in the 2014 KCA, was very rude, and barely listenend as her director won an award. Considering she won the best actress award, she could 'act' like she was happy. I mean she's never gonna' win a better award, and even Selena Gomez was happy she won