Can someone tell me who this is?

Well hello my pretty.
What a pleasant surprise!

I don’t believe I know you.

 
 
 
 
 
 
    
 

This evening, as per my usual, Oz and I meandered through the garden, and lo and behold there she was in magnificent splendor!

I could swear I planted yellow Iris bulbs in this spot last season, but this is not an Iris. 

 I am beside myself to know her name.

 Is anyone on familiar terms with this lovely lady?

.