Am I having a senior moment or what?

It's panto season here in Perth (school holidays you know) - and Snow White's on stage doing her stuff with the seven little people at the Regal Theatre.

There's heaps of ads on TV and flyers in all the shopping centres - all of which refer to "...the Seven Dwarfs". My first reaction was that the promoter was a cretin because I thought it should be "dwarves". The folk at work agree, but my Chambers and my son's Macquarie Junior are silent on the matter. Now I'm feeling all insecure and unsure.

help

please

it's not fun getting old

..............

stales

(PS The flyer advises that this is "The stage Adaptation of the BROTHERS GRIMM (their caps.) Immortal Story" Ah, those abused apostrophes again!!)