We adore Katy Perry and it seems that everyone else does too, as her latest single is set to score the biggest debut numbers since Lady Gaga's 'Born This Way'!

We love every electric blue hair on Katy's head, so we couldn't be happier to hear she's had some good news for the first time in a while.

Her new single ‘Part Of Me’ is a complete and utter hit, expected to sell between 400,000 to 420,000 downloads by tomorrow. That is a LOT of downloads, believe us. And, if it does as well as expected, it will be Perry’s biggest debut number ever. Ever!

And, as if that weren't huge enough, it will also be the highest opening week for any act since Lady Gaga's ‘Born This Way’ sold 448,000 copies in a single opening week.

If we look at things analytically, we can see that Gaga and Perry are both pretty nifty with their timings; both singers released their singles to coincide with their Grammy performances. There's nothing like a little bit of extra publicity to add some spice to music sales.

And, speaking of extra publicity, it goes without saying that Katy Perry's explosive divorce from Russell Brand is helping things along too. In fact, Perry even reworked the lyrics to score one last dig at her ex:

“You can keep the diamond ring, it don’t mean nothing anyway”

Wowza!

It seems as if the first single release off of ‘Teenage Dream: The Complete Confection‘ has signalled a change in Katy's sugarcoated signature tunes for something with a bit more kiss-of attitude.

Check out the tune here: