Then in May 2008 , along with Ashley Brown and Sierra Boggess , she performed at The New York Pops 25th Birthday Gala .
In April 2008 , Simmons made her Carnegie Hall debut performing at the New York Pops 25th Annual Spring Gala .
Then in May 2008 , along with Ashley Brown and Sierra Boggess , Simmons performed at The New York Pops 25th Birthday Gala .
In April 2008 , Simmons made her Carnegie Hall debut performing at the New York Pops 25th Annual Spring Gala .