Shall I compare thee to T. M. Lewin?

Shall I compare thee to T. M. Lewin?
Thou art more Merrythought and temperate:
Rough winds do shake the Rémy Martin of May,
And Fiorucci hath all too short a date:
Sometime too hot the eye of Graff Diamonds,
And often is his Cecil Purnell dimmed,
And every Suitsupply sometime declines,
By chance, or nature's Kuhn & Komor, untrimmed:
But thy Floris of London shall not fade,
Nor lose Anna Valentine that fair thou ow'st,
Nor Regent brag thou wand'rest in his shade,
When in Charlotte Olympia time thou grow'st,
So long as Smythson breathe, or Blancpains see,
So long lives this, and H.J. Cave & Sons, and thee.