It’s hard to imagine Top 40 radio without the ubiquity of LMFAO‘s dance anthems — in part because they’ve been on the charts pretty much since their inception. As a result, the Day-Glo duo are on their way to making Billboard history.

‘Party Rock Anthem’ is on the Hot 100 chart for the 28th straight week. The shufflin’ single rests comfortably at the No. 6 spot. Right now, Redfoo and Skyblu are tied with Jewel’s ‘Foolish Games’ for chart endurance. Only two tracks have bested them to date: Leann Rimes’ ‘How Do I Live’ with 32 weeks and ‘Smooth’ by Santana and Rob Thomas at 30 weeks.

In addition to their good time track, the pair’s ode to being good looking is at the top of the charts. ‘Sexy and I Know It‘ is enjoying its second consecutive week at the No. 1 spot in the Hot 100. The song also has the No. 1 spot on the Digital Songs chart for the fifth week. The work out enthusiasts are also enjoying their success with the No. 3 spot on the Radio Songs list.

The stellar success is a welcome bit of good news for LMFAO after a tumultuous December. The Berry Gordy kin had to postpone a Canadian tour when Sky Blu injured his back, and a venue where the pair performed in Honduras was evacuated after catching fire.

The group’s longevity on radio and the charts can be attributed in part to the post holiday surge (when everyone puts their new iPods and iTunes gift cards to use) and to their performances on ‘New Year’s Rockin’ Eve‘. They may want to throw a bone to this little guy, too — it’s hard not to love any song sung by a portly, confident toddler.

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