The Dark Cerulean Crown of Ozymandias can be found on the second floor of the Clothing Store and purchased for 35 Bucks. Purchasing this hat will allow you to wear this hat only in Adopt Me!, unless you buy this item from the Roblox Catalog.
The description of this item on the Roblox Catalog reads
"In Egypt's sandy silence, all alone, /
Stands a gigantic Leg, which far off throws /
The only shadow that the Desert knows: /
"I am great OZYMANDIAS," saith the stone, /
"The King of Kings; this mighty City shows /
"The wonders of my hand." The City's gone, /
Nought but the Leg remaining to disclose /
The site of this forgotten Babylon. /
We wonder, and some Hunter may express /
Wonder like ours, when thro' the wilderness /
Where London stood, holding the Wolf in chace, /
He meets some fragments huge, and stops to guess /
What powerful but unrecorded race /
Once dwelt in that annihilated place."