Hollywood’s hottest and most self-obsessed stars like the Kardashians, Justin Bieber, Taylor Swift, Reese Witherspoon, Naya Rivera – and even Amanda Bynes – were very busy this week, taking scandalous stripped-down sexy selfies on vacation, showing off their fabulously glam lives and brand new sports cars, and just being silly.

As usual, they weren’t shy sharing their shenanigans on social media, for better or for worse.

If you are too busy to scour all the social media sites for the images, Popdust has the rundown for you of the coolest, not-so-cool and WTF social media photos in our weekly feature.

PHOTOS: Check Out The Week's Best And Worst Celebrity Social Media Pics

Hollywood’s hottest stars like Kim Kardashian, Rita Ora, Justin Bieber and Madonna were very busy this week, taking scandalously sexy selfies, celebrating St. Paddy’s Day, showing off their adorable spawn and just being vain.

As usual, they weren’t shy sharing their shenanigans on social media, for better or for worse.

If you are too busy to scour all the social media sites for the images, Popdust has the rundown for you of the coolest, not-so-cool and WTF social media photos in our weekly feature.

PHOTOS: Check Out The Past Week's Cool, Not So Cool And WTF Celeb Social Media Pics

From the Kardashian klan to Justin Bieber and Amanda Bynes, find out what Hollywood's hottest stars were up to on social media this week - for better or for worse - in Popdust's weekly feature where we bring you the cool, the not so cool and the WTF? Instagram, Twitter and WhoSay snaps.

Find out what Hollywood's hottest stars were up to on social media this week - for better or for worse - in Popdust's weekly feature where we bring you the cool, the not so cool and the WTF? Instagram, Twitter and WhoSay snaps.