Alisters

4 clues
Top celebs
Elite invitees
Oft-invited celebs
Most-wanted invitees
Similar answers:
Abaters
Abetters
Aborters
Acadapters
Accepters
Accouters
Acquitters
Acters
Actualists
Adapters
Adbusters
Administers
Administershots
Adopters
Aerialist
Aerialists
Aerometers
Afewpointers
Afters
Aftershave