The Men in Black franchise let us know that Michael Jackson was an alien, and Elvis went back to his home planet.  Now in the 3rd installment coming to theaters in May we may find out a logical explanation about Lady Gaga. 

According to the Huffington Post:

The megawatt pop star will appear in a small role in the blockbuster film, which co-stars Will Smith and Tommy Lee Jones as alien-fighting Secret Service agents who set out to save the "future of humankind".

"We have a couple of celebrity cameos, but I think I cannot reveal who they are," Smith told the website while on a promotional tour in Rio last week. "We must keep as a surprise that Lady Gaga appears."

Well all I can say is we might finally find out that Lady Gaga is an alien.