What is the plural of "sombrero"?
Hi RavenDance, and welcome to the SpanishDict forum!!!
In general, when a noun ends in an unstressed vowel (as with sombrero), adding an "-s" to the end of the word will make it plural. It might also be helpful to note that any words used to modify the noun must also "agree" in number. For example:
►el sombrero negro → los sombreros negros
►algún sombrero → algunos sombreros
►un sombrero de seda → unos sombreros de seda
If you are unfamiliar with the 'rules' of grammatical number as they apply to Spanish, you might find the following resource helpful: Nouns/plurals