One source claims the 18-year-old was actually bullied for being there -- apparently not everyone thought she earned the right to walk the shows!
The insider spilled:
She's here! She's here! She's here!
The Unconditionally singer wore a delectable mint green satin Zac Posen dress with sculpted shoulders that looked painted on her curvealicious bod!
Katy accessorized the sophisticated yet seksi look with peep-toe Charlotte Olympia pumps and a bejeweled Dolce & Gabbana headband.
We can't WAIT to see her perform later on the show! She's gonna SLAY!
[Image via Getty Images.]