Lily Allen wow’d the crowds at Rockefeller Center in New York City this morning with Blondie as the two sang “Heart of Glass” together on stage in NBC’s own Summer Concert Series (now in its 12th year).

Allen, well-known for her gutsy and street-inspired clothing ensembles, looked quite elegant in this colorful striped dress.

Blondie, though aged, still managed to pull together a wonderful set to entertain the morning crowd.

NBC’s Summer Concert Series lineup includes the following performances and dates:

• MONDAY, MAY 28: Maroon 5
• FRIDAY, JUNE 1: Big & Rich
• FRIDAY, JUNE 8: Rihanna
• FRIDAY, JUNE 15: Enrique Iglesias
• TUESDAY, JUNE 19: Bon Jovi
• FRIDAY, JUNE 22: Chicago & America
• MONDAY, JUNE 25: Kelly Rowland (in studio)
• FRIDAY, JUNE 29: Hilary Duff
• TUESDAY, JULY 3: Paolo Nutini (in studio)
• FRIDAY, JULY 6: Fall Out Boy
• FRIDAY, JULY 13: KT Tunstall
• FRIDAY, JULY 20: Hairspray the movie
• FRIDAY, JULY 27: Marc Anthony
• FRIDAY, AUG. 3: Vince Gill & Amy Grant
• FRIDAY, AUG. 10: Natasha Bedingfield
• FRIDAY, AUG. 31: Chris Brown

A fantastic list of performers. Be sure to catch your favorite — in person or on TV — if you can!