Famous is an adjective, not a noun, so it would have no plural.
Adjective have degrees:
The adjective 'famous' can describe a singular or a plural noun:
The word sought may be famous (well-known, renowned, eminent).
A similar word is the adjective famished (very hungry).
The correct spelling is "familiar" (recognizable, usual).
Neither.
The correct spelling is famous.
You spelled it correctly in the question.
Famous
Famouse
The plural way to spell studio is studios.
The plural is cantaloupes.
The plural is roses.
The plural is "emeralds."
The plural is "recesses".
The plural of celebrity (famous person) is celebrities.
The correct spelling of the plural noun is celebrities(famous or well-known people).
The plural of parcel (package, section of land) is parcels.The plural of parasol (sun umbrella) is parasols.The famous NFL football coach is Bill Parcells.
The plural way to spell studio is studios.
The plural is resources.
The plural is cantaloupes.
The plural is roses.
The plural is "emeralds."
The plural is cherries.
The plural is hooves.
The plural is bridges.
The plural is a regular S plural, instruments.