Happy Birthday Ariana Grande!!
Today, it is Ariana's 20th birthday! She stayed up till midnight and tweeted about her birthday and being 20. She then watched some fan birthday-videos and thanked us for wishing her a happy birthday. You can tweet her a happy birthday here.
Ariana hasn't told us how she will be celebrating, last year she had a party at a restaurant with her friends and family.
Here is one of the many fan birthday videos-