Marieve Herington is a Canadian actress and singer. She has appeared in recurring roles on How I Met Your Mother and Good Luck Charlie. She also has provided the voice for animated lead characters in Delilah and Julius and Pearlie. At the age of 12, she began singing in major public performances. Since the age of 16, she has been fronting her own jazz ensembles. Currently, she performs with the Marieve Herington Band.
http://en.wikipedia.org/wiki/Marieve_Herington