Vintage 1960s Berliner Modelle Pink Silk Mushroom Hat

Vintage 1960s Berliner Modelle Pink Silk Mushroom Hat What a piece of fabulosity! I call it the pink mushroom For some reason it reminds me of a button mushroom in the best way possible!! No flaws and kept so well! No size on item! But seems very normal sized rather than teeny tiny! Roughly 21 inches this is a rough estimate by taking a tape and measuring inside band This will not be spot spot on My head is roughly 21 and it fit easily and could actually with stretch go up to a 22