Well hello there!
The mentor was all but mellow in a yellow print Winter Kate dress, red satin Brian Atwood pumps and mustard-color House of Harlow 1960 crocodile clutch.
Nicole finished off her Fashion Star fabulous look with House of Harlow jewels and a chic high knot.
We're loving what we see from the front, but it's the back of Mrs. Madden's dress that really caught our attention!
[Image via WENN.]