Look at Nick Jonas, all grown up and playing a lead role in “How To Succeed In Business Without Really Trying.” How cute is he? Hundreds of Jonas Brothers fans lined up outside the Al Hirschfeld Theatre in Manhattan just to catch a glimpse of Nick – and the theater was nearly sold out. Not bad for a first night!

The 19-year-old took over for Glee actor Darren Criss, and he’s not the only new addition to the cast – Ugly Betty’s Michael Urie also has a new supporting role.

Check out the cute pics of the youngest Jonas Brother below!

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