AAO Colloquium. Friday, 30th March - 3:30pm AAO Conference Room The variable compact radio nebula of P Cygni Katerina Exter Queen's University, Belfast P Cygni is a supergiant star, of the class of S Dor variables. Its UV-optical variations are quite well documented, and are variously linked to sub-photospheric activities and the propagation of inhomogeneities through the wind. Radio studies, which are somewhat less popular than optical, show also the presence of inhomogeneities in the wind, and indicate that in the past 2000yrs, a number of fairly abrupt changes to the mass loss rate have occured. My talk will concentrate on the radio studies of the wind and circumstellar nebula of P Cygni; a summary of the past observations and what they can tell us, a short word of warning for those unfamiliar with radio stellar astronomy on how far one can take the results of radio studies, and finishing up with a presentation of some recent results I have been working on, that show that the morphology of the inner radio wind varies on very short timescales, which give us the hope that we may be able to actually image directly some of these wind inhomogeneities.