Studded means set all over with small raised pieces. Leather with metal points, a tyre with spikes for ice.
It takes with, and the things studded are usually decorative or functional rather than accidental. Boots have studs for grip and jackets have them for show. The figurative use is common in journalism, since a star-studded cast is one full of famous names, and that phrase is now close to a cliché. The noun stud also means a male horse kept for breeding, which is a quite separate word.
Proto-Germanic
*stōdą
Proto-West Germanic
*stōd
Old English
stōd
Middle English
stood
English
stud
English, today
studded
From stud + -ed. stud comes from Middle English stood, stod, from Old English stōd, from Proto-West Germanic stōd, from Proto-Germanic stōdą. Cognate with Middle Low German stōt, German Stute, Dutch stoet and Old Norse stóð.
Etymology from Wiktionary, CC BY-SA