Velvet Gown

It's in the Beggars' Guild charter: "Some in rags and some in tags and one in a velvet gown". The current incumbent of the velvet gown of power (at least during the events of Men at Arms) is Queen Molly.

Annotation

This comes from the nursery rhyme Hark! Hark!. The Mother Goose version goes:

Hark! Hark! The dogs do bark,

The beggars are coming to town;

Some in rags, some in tags,

And some in velvet gown.

Opies' Oxford Dictionary of Nursery Rhymes gives the last two lines as:

Some in rags, some in jags,

And one in a velvet gown.

Halliwell's The Nursery Rhymes of England (second edition, 1843) reverses it as:

Some in jags, some in rags,

And one in a velvet gown.