The 15-year-old actress was joined by Madison Pettis and Alli Simpson.
“.@olivia_holt’s #sweet16 was a blast Happy early Birthday love! Last night was as fun&special as u r:) Love u babes,” Ryan tweeted.
Madison added, “Had soo much fun last night at @olivia_holt Sweet 16! Happy Birthday Girl! ?”
15+ pics inside of Ryan, Madison and Alli…