The correct spelling of the phrase "picture of" is an easy one, but what about the plural form "picture ofs"? In phonetic transcription, it is written as /ˈpɪktʃər əvz/. The 's' is added to show that there are multiple pictures. However, it is often better to rephrase this into "pictures of" to avoid confusion. Remember, when in doubt about spelling, always check a reliable dictionary or grammar guide to ensure accuracy in your writing.