I will always have love for my boy bands!

The Backstreet Boys invited former 'NSYNC member Lance Bass onstage at their residency show at the Axis in Planet Hollywood in Las Vegas Saturday night. 

They sang their year 2000 hit, "Shape of My Heart."

Love this!

We really showed @lancebass the shape of our hearts tonight. Thanks for coming by #BSBVegas, brother!

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#BSB

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