How do you tell which twin is which on full house?

In "Full House," the twin sisters, Mary-Kate and Ashley Olsen, played the character Michelle Tanner. Although they often swapped roles, viewers could tell them apart by their individual outfits, hairstyles, and sometimes by their expressions and mannerisms. Additionally, the show occasionally gave each twin specific traits or storylines that made them more distinguishable in certain episodes. Overall, familiarity with their personalities and recurring themes helped audiences differentiate between them.