LAS VEGAS -- Who knew Diddy was such a Tori Kelly fan?

Oh, sorry... Puff Daddy.

The Bad Boy rapper took it back to the '90s on Saturday night at the iHeartRadio Music Festival when he brought out Lil' Kim to perform their 1997 hit "It's All About The Benjamins," which, back in the day, also featured The LOX and The Notorious B.I.G. But he also brought it back to the present, going all out for "Finna Get Loose," which featured a giant projection of Pharrell on the big screen.

Diddy surprised fans with guest after guest when he brought out more of his Bad Boy family, extending their reunion from the BET Awards in June. And, as it turns out, Tori Kelly is now an honorary member. The singer slowed it down with him for "Coming Home."

Here's how the special guests during Puff's set went down:

MGK came out to kick off 'It's All About The Benjamins.'

And soon enough, Lil' Kim was out there too.

Busta Rhymes came out for 2002's 'Pass The Courvoisier Part 2.'

The surprises kept rolling in when Ma$e jumped onstage.

Tori Kelly killed it when she sang Skylar Grey's verse on 'Coming Home.'

Things got emotional when he performed 'I'll Be Missing You' for Biggie.

What was your favorite moment from Diddy's iHeart set? Tell us in the comments!