The Week In Pictures:October/November 25/ 01, 2013

Saturday: The Kardashian Sisters

Kim Kardashian understands the basics of how to throw an epic party. For her 33rd birthday, she rallied her friends and family for a lavish weekend in Las Vegas (of course). Flanked by her sisters and accompanied by new fiancé Kanye West, Kim partied the night away — in between posing for a ton of photographs. You just know that lacy number was made for paparazzi snaps.

Sunday: Reese Witherspoon and Ava Phillippe

Thanks to Reese Witherspoon's apparent refusal to stop aging and young Ava Phillippe's good genes, Hollywood soon won't be able to tell this mother-daughter duo apart. The charming pair look more and more alike everyday! Basically, let's all be prepared for Legally Blonde: Mom vs. Daughter sometime in the near future.

Monday: Hailee Steinfeld and Moises Arias

The teenage cast of Ender's Game finally let loose at their film's afterparty in Los Angeles. While they play serious commanders in the movie, they're really all just goofy kids at heart. Hailee Steinfeld and Moises Arias got particularly chummy on the dance floor, in between rubbing shoulders with famous co-stars Harrison Ford and Ben Kingsley.

Tuesday: Ashton Kutcher

Forget Apple — Ashton Kutcher is all about Lenovo now. The Two and Half Men star and one-time Steve Jobs portrayer has somehow snagged a gig as Lenovo's product engineer. Yeah, you read that right. Not an actor who plays a product engineer, but an actual product engineer.

Wednesday: Katy Perry

Being an international pop star means catering to your international audiences. For Katy Perry, this apparently means wearing colorful cat ears while visiting Japan. The "Roar" singer touched down at Narita International Airport and kindly spent time posing for pictures and signing autographs.

Thursday: Demi Lovato

Sure, Demi Lovato's Halloween costume wasn't the most promiscuous (that distinction belongs to Nicki Minaj), but her creepy, gory look might just be the best in Hollywood. Take a deep long look into her eyes — or those unsettling neck gashes. The singer and X Factor judged clearly knows how to go all out for All Hallow's Eve.