Je voudrais essayer cette robe en taille 36.

Pronunciation: zhuh voo-dreh eh-say-yay seht rohb ahn tah-yuh trahnt-uh-siss.

Meaning: I would like to try on this dress in size 36.

French clothing sizes differ from English-speaking countries, so knowing how to ask for your size is essential when shopping in France—taille 36 is typically a small or XS in American sizing.