How long can you wear a pair of jeans before you should throw them in the wash?

About once a month, according to the experts!

CNN has a rundown of lots of clothing items and how often you can wear them before washing based on smell (and also hygiene):

• Shirts:  Once, unless you wore it over another shirt
• Underwear:  Once
• Socks:  Once
• Workout clothes: Once
• Pajamas:  Once if you don’t shower before bed…once a week if you do
• Coats and jackets:  You should wash them every month

Of course…your results may vary!