How do you know if your Princess Diana Beanie Baby is worth money?

To determine if your Princess Diana Beanie Baby is worth money, check its condition, tag details, and any unique features like misprints or errors. Look for the original hang tag and tush tag, as these significantly impact value. Research current market prices on auction sites or collector databases to see what similar items are selling for. Finally, consider consulting a Beanie Baby expert or appraiser for a professional opinion.