Who is the brunette guess model?

The term "brunette guess model" could refer to various models associated with the Guess brand who have brunette hair. One notable model is Adriana Lima, known for her work with Guess in the early 2000s. Other models may also fit this description, as Guess has featured numerous brunettes in their campaigns over the years. If you have a specific context or timeframe in mind, please provide more details for a more precise answer.