Ariana Grande will not be participating in season 13 of 'American Horror Story'. This decision was made due to scheduling conflicts with the artist's 'Eternal Sunshine' tour. This news, confirmed by The Hollywood Reporter, has caused significant disappointment among fans.

Previously, a Halloween social media post by Ryan Murphy Productions announced that Grande would join 'American Horror Story' veterans such as Sarah Paulson, Evan Peters, Angela Bassett, Kathy Bates, Emma Roberts, Billie Lourd, Gabourey Sidibe, Leslie Grossman, and Jessica Lange in season 13. The cast began filming this week in New York City, reprising familiar characters from the third season.

Ariana Grande is currently on her 'Eternal Sunshine' tour, which is scheduled to conclude in London on August 23. Announced as a new face for season 13, Grande previously collaborated with Ryan Murphy in 2015 on Fox's 'Scream Queens'. The Grammy-winning artist has focused more on her acting career in recent years, participating in projects like 'Wicked' and 'Wicked: For Good'.

The official statement for season 13 reads: “A unique 13th episode that will bring justice to everyone's most feared number. With a star-studded cast featuring many fan-favorite roles being reprised, 'American Horror Story: 13' continues to build upon the anthology's decades-long legacy.” These developments have sparked great curiosity among the show's fans, while Grande's absence is seen as a notable loss.