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It's almost time for the big season eight premiere of Keeping Up With the Kardashians!

But before we see Kim Kardashian reveal the sex of her and Kanye Wests baby on the show Sunday night, check out the videos that topped our most-watched list this week!

After rapping with his son Jaden Smith on The Graham Norton Show, Will Smith launched into the theme song from Fresh Prince of Bel-Air with his pal DJ Jazzy Jeff.

And if that wasn't enough of a surprise, Alfonso Ribeiro soon joined them, busting out his signature Carlton Banks dance move. 

Before Keeping Up With the Kardashians airs this Sunday, take a peek as Khloe Kardashian Odom, Kourtney Kardashian and Kris Jenner find out the sex of Kim's baby!

Get a sneak peek at the drama, laughs and tears to come in this promo from the new season of Keeping Up With the Kardashians.

And don't forget to tune in to the season premiere of Keeping Up With the Kardashians this Sunday at 9 p.m. on E!.