An idiom is “a group of words in a fixed order that have a particular meaning that is different from the meanings of each word on its own” (Cambridge Dictionary). As such, idioms are crucial parts of any language as they enrich the vocabulary and increase the expressive possibilities. Since phraseology is an important part of any language, this research is based on the analysis of idioms of fashion and clothing in English and Croatian; English as the source language and Croatian as the target language. The research is divided in three major parts. The first part of the research consists of a brief theoretical overview of the basic phraseological terms which need to be explained in order to understand the aim of this research and its significance. The second part of the research consists of idioms of fashion and clothing. In this part their meaning and translation into Croatian are defined, explained, and exemplified. The list of idioms was compiled from various dictionaries of idioms which serves as a corpus. Another important aspect of this research is that it deals with the translation of phrases and the common problems that occur within the translation. The research shows how some idioms have their equivalent in Croatian, while some are translated and explained with a paraphrase. The last part of the research is a brief conclusion of the topic which highlights the importance of phraseological units since their usage enriches the vocabulary of any language.