Why does the author include details about the narrator trying on Meg’s clothes in "The All-American Slurp"?

to explain the fashion trends of the narrator’s youth
to emphasize the narrator’s desire to dress like her classmates
to criticize the Gleasons for their spending habits
to highlight the cultural differences between the narrator and Meg

The correct answer is: to highlight the cultural differences between the narrator and Meg.

Including details about the narrator trying on Meg's clothes serves to emphasize the cultural differences between the narrator's family, who are Taiwanese immigrants, and Meg's family, who are White Americans. The narrator's fascination with and attempt to fit into Meg's clothes highlight their curiosity and desire to assimilate into American culture, while also highlighting the cultural divide that exists between the narrator and her classmates.