Former Major League Baseball star Sammy Sosa sure looks different lately. We don't recall him having bleached skin back in his late 1990s, home run heyday.

That's because he didn't. But Sammy Sosa pictures taken at an event in Las Vegas last week revealed a surprising, comically light skin pigmentation on him.

What's with the skin bleaching, Sammy? Check out these then-and-now pics:

While no cause has been concretely established at this time, some fans have speculated that Sosa's rampant steroid use in the '90s and 2000s is behind this.

Many have posited, although they cannot prove it, that steroid use could dramatically increase an individual's likelihood of becoming symptomatic with vitiligo.

That rare chronic disorder, which causes cells responsible for skin pigmentation to stop functioning, has gained much notoriety because of Michael Jackson.

It was reported in June that Sosa, who rose to fame as prolific home run hitter in the late '90s, tested positive for steroids in 2003, to the surprise of no one.

The Chicago Tribune quotes Rebecca Polihronis, an acquaintance of Sosa, who claims that that "he is going through a rejuvenation process for his skin."

"He is going through a rejuvenation process for his skin," Polihronis said. "Women have it all of the time. He was surprised he came out looking so white. I thought it was a body double. Part of (the photo appearance) is just the lighting."

Really, Rebecca? Click to enlarge these Sammy Sosa pictures (he is seen here with wife Sonya) and see if you agree. WTH happened to Sammy's face?!