The pair co-starred on 'Jessie' from 2011 to 2015.
The actor died in his sleep after a seizure on Saturday.
Obama shared a photo with Boyce and explained how she had met the late actor on several occasions.
Boyce's roommates are sharing their thoughts on the tragic loss.
A spokeswoman for the Los Angeles County Medical Examiner-Coroner tells ET that an autopsy was performed on Monday.
Stars are speaking out following the death of Disney star Cameron Boyce.
See the actress share her moving story about her late 'Descendants' co-star.
The actress reflected on the late actor while on 'The Talk,' airing weekdays on CBS.
The late star's father shared his grief on Twitter on Sunday.
Cameron Boyce's family confirmed his death to ET on Sunday, explaining in a statement that he died of a seizure in his sleep.
The rising star chatted about his drive to give back in an interview months before his death.
The actor's new movie, 'Descendants 3,' is set to debut on Disney Channel in August.
The 20-year-old actor died in his sleep on Saturday.
