Anglican clergy have never been totally indifferent to millinery. I know of one Canterbury Cap which still makes its appearance within the Ordinariate and even consorts with a morning coat at Ascott; and the sort of clergyman who wore bands over his tippet and hood might also, to celebrate the major festivals, carry his academic square up and down the church at the Divine Office (Yes ... I admit it ... I have done that). We Catholics of the Anglican patrimony, of course, have always been preoccupied with birettas. I once lent S Thomas's to the Order of S Lazarus and was fascinated by the crop of green pompoms. Old photographs from Walsingham in the days of Fr Hope Patten reveal that clerical members of the College of Guardians wore birettas twice the height of ordinary ones (is it true that Fr Houlding still does?). Some clergy, doubtless for carefully thought out reasons, wore Spanish models. Clergy who claimed dubious doctorates from obscure institutions added an additional wing to their headwear. And there was the pleasure of covering and uncovering: I once heard a sermon by an Anglican bishop in which, for some reason which now eludes me, he repeatedly mentioned the Sovereign Pontiff. The numerous clerical brethren in choir duly uncovered at each such mention ... ever more enthusiastically as time went on (not that they all subsequently accepted the invitation to corporate unity issued by that same Pope ... there is perhaps a sermon in this ...).
My own biretta, in constant use since I was deaconed in 1967, has lost the pristine gloss it possessed when I first bought it in Vanpoules. Having sustained showers of rain more often than I care to remember when I was stumbling across country churchyards in front of an undertaker, or panting up the irregular hillside of the cemetery at High Wycombe, or going round the village on sick calls during winter blizzards, it is somewhat faded and warped. More strangely, the pompom, over the decades, gradually turned a shade of reddy black. (I look to those with chemical know-how to explain this.) I tended to get tired of parrying the quips of those who enquired whether, like a dragon-fly larva, I might be gradually metamorphosing into a Canon, and so when the thread attaching the pompom weakened and broke, I did not sow it back on.
But it is born upon me that the biretta-without-a-pompom should really be deemed the proper historical headwear for the clerus Romanus. It is still worn as such by Redemptorists and Oratorians and Cardinals (pompoms being a piece of frenchification, yes??). And, since the Ordinariate is directly subject to the Roman Pontiff, I am sure that the biretta-without-a-pompom is exactly what our beloved Holy Father wishes us to wear.
We owe it to him to get our headwear right, whatever the cost, come what may.