TORONTO - In four short months, lively electro-hip hop duo, LMFAO have gone from opening for glittery pop-dance star Ke$ha at the Molson Canadian Amphitheatre to headlining their own show at the Air Canada Centre.

Mind you it was the theatre set-up at the ACC on Monday night so it was only 5,500 people.

Still the rise of the party-hearty, sparkly-clothed and afroed DJ/rappers Redfoo (the 36-year-old Stefan Kendal Gordy, youngest son of Motown founder Berry Gordy) and his 25-year-old nephew SkyBlu (Skyler Husten Gordy), has been miraculous.

Blame the ubiquitous summer song Party Rock Anthem, from LMFAO’s second album, Sorry for Party Rocking, released earlier this year and played at every house, frat, condo, beach and otherwise party imaginable.

Yes, it’s all about as deep as it sounds but it’s undeniably catchy. (And I couldn’t stop imagining what Will Ferrel’s ice-dancer Chazz Michael Michaels from Blades of Glory, or Martin Short and Harry Shearer’s SNL synchronized swimmers might do with the synth-driven anthemic dance number).

And while I didn’t fully drink the purple Koolaid on Monday night, the infectious energy of the duo, who put Cher and Diana Ross to shame in terms of costume changes, combined with the dancing throngs on the floor and in the stands at the ACC was kind of hard to ignore.

It was more like a pep rally with booze and inflatables.

Although it was apparently fake booze according to the building manager who came by afterwards to the media gondola as the two shook up Corona beers and sprayed them on the crowd during I’m in Miami Bitch and did likewise with champagne during Champagne Showers, while inflatables crowd surfed and palm trees made an entrance, also during I’m in Miami Bitch.

LMFAO (Laughing My F---ing Ass Off as named by their grandmother) are more like a brand than a band - with identifiable personas, a clothing line, and even temporary tattoos inside the CD case when you buy a copy of Sorry For Party Rocking.

The pace of their show was exhausting and it was as much a feast for the eyes (not always in a good way, with more on that later) with video screens showing videos, graphics, and lyrics as one song segued almost immediately into the next with very little in the way of a break.

Backed by a minimal band - a drummer, guitarist and turntablist as far as I could tell - various dancers (including the guy wearing a box on his head known as Box Man) and wearing clothes ranging from sparkling track pants to spandex shorts, to board shorts to the inevitable speedos, these two clearly belonged on a beach, a yacht, or a backyard deck -- definitely in the sun somewhere.

“Who wants to party?” said SkyBlu.

“Where are all my sexy ladies at?” added Redfoo. “Canada got some party animals!”

You get the picture.

Of their songs, Sorry For Party Rocking, Gettin’ Over, One Day, and Party Rock Anthem were the most coherent, although such titles like Put That A$$ To Work, I’m in Miami Bitch, I am not a Whore, and Shots, get minor points for sheer effort despite repetitive lyrics.

When Redfoo and SkyBlu returned for their second encore for Sexy and I Know it and stripped down to speedos (including a God awful sparkly red elephant with a trunk one), all bets were off.

The image has forever been burned on my retinas.