Since 1545 the Lord Mayor of London has worn a Royal Livery Collar of Esses. However, the collar's origins are not royal, Sir John Alleyn, twice Lord Mayor, having bequeathed it to the next Lord Mayor and his successors "to use and occupie yerely at and uppon principall and festivall dayes." It was enlarged in 1567, and in its present shape has 28 Esses (the Lancastrian ‘S’), Tudor roses and the tasselled knots of the Garter (alternating) and also the Portcullis, from which hangs the Mayoral Jewel. The collar is worn over whatever the Lord Mayor may be wearing, secured onto their underdress or State Robes by means of black or white silk satin ribbons on the shoulders.