Ariana Grande and Jennette McCurdy pose hand in hand while attending the premiere of their new show Sam & Cat held at Cineworld 02 Arena on Saturday (October 12) in London, England. The two actresses were joined on the red carpet by co-star Sophia Grace Brownlee, who posed with her cousin Rosie McClelland. Ariana‘s new boyfriend Nathan Sykes showed his support while attending the premiere. “Highlight of the day… Brad was interviewing us and accidentally said “semen cat” instead of “Sam and Cat”. I pray someone got it on video, ” Ariana tweeted. The day before, Ariana and Nathan held one umbrella while walking out in the rain together. Check out the 15+ pictures inside of the stars attending the Sam & Cat premiere!