Can't-Miss Celebrity Pics!

Jennifer Aniston made a memorable arrival to The Daily Show in NYC on Thursday.

Olivia Munn and Ewan McGregor got close on the red carpet at the premiere of their movie Mortdecai in LA on Wednesday.

Kate Moss joined Louis Vuitton CEO Michael Burke in the front row at the company's Paris Fashion Week show on Thursday.

Michelle Obama had a Cat in the Hat-themed party with kids at the White House after a reading of Oh, The Things You Can Do That Are Good For You: All About Staying Healthy on Wednesday.

The gym was a top priority for John Krasinski in LA on Thursday.

Reese Witherspoon caught some fresh air in LA on Thursday.

Usher stayed warm in a svelte outfit in NYC on Thursday.

Lea Michele exuded excitement in LA on Wednesday.

On Thursday, Jennifer Connelly filmed an episode of El Hormiguero for Spanish TV with a bird.

Gwyneth Paltrow hit the red carpet for the LA premiere of Mortdecai on Wednesday.

Jennifer Lopez spoke at a Q&A for her movie The Boy Next Door at AOL Studios in NYC on Wednesday.

On Tuesday, Emily Blunt adoringly accompanied her pal Christoph Waltz at IWC's Journey to the Stars Gala Dinner in Geneva, Switzerland.

Kevin Costner had the sweet support of his wife, Christine Baumgartner, and daughter Lily Costner at the Black or White premiere in LA on Tuesday.

On Tuesday, Demi Lovato and Wilmer Valderrama stayed close during Nick Jonas's party at LA hotspot The Ivy in LA.

Cara Delevingne proved she's a red carpet queen at the YSL Loves Your Lips event in London on Tuesday.

Octavia Spencer, Anthony Mackie, and Jillian Estell hit the red carpet at the premiere of their movie Black or White in LA on Tuesday.

Reese Witherspoon had a pep in her step during her workout in LA on Wednesday.

Jennifer Aniston's early call time didn't damper her spirit at Good Morning America in NYC on Tuesday.

Ryan Gosling and Russell Crowe shared a laugh-out-loud moment on the set of The Nice Guys in LA on Wednesday.

Halle Berry flashed a smile while running errands in LA on Wednesday.

Chloë Grace Moretz spoke at the Museum of the Moving Image Honors in NYC on Tuesday.

Jennifer Garner chatted on her cell phone while out in LA on Tuesday.

Anne Hathaway was in all white on Tuesday for the premiere of Song One in NYC.

Gwen Stefani was picture-perfect for a concert announcement in LA on Tuesday.

Bar Refaeli posed at the STYLIGHT Fashion Influencer Awards in Berlin on Tuesday.

Julianne Moore was honored by the Museum of the Moving Image in NYC on Tuesday.

Elizabeth Hurley and Katie Holmes made a pretty pair at the Marc Cain fashion show in Berlin on Tuesday.

Cute couple Keri Russell and Matthew Rhys promoted their FX show The Americans at the TCAs on Sunday.

Shia LaBeouf enjoyed a coffee in LA on Tuesday.

Dakota Johnson had a fashion moment in LA on Tuesday.

In NYC on Tuesday, TLC and New Kids on the Block posed with a cardboard cutout of Nelly at a press conference for their upcoming tour.

Meghan Trainor spent time with fans in London on Tuesday.

Ben Affleck had an intense action scene on the set of The Accountant in Atlanta on Tuesday.

The Flash star Grant Gustin sported his sexy red costume while filming scenes in New Westminster, Canada, on Monday.

Jessica Chastain was fresh-faced while promoting A Most Violent Year in London on Tuesday.

Jennifer Lopez made a picture-perfect arrival outside The Wendy Williams Show in NYC on Tuesday.

Gwen Stefani rocked serious camo in LA on Monday.

Vince Vaughn had a snack on the set of his movie in LA on Tuesday.

Sharon Osbourne headed out in Beverly Hills with her adorable BFF on Monday.

Johnny Depp and Amber Heard turned the London premiere of Mortdecai into a Monday date night.

Queen Letizia of Spain attended a Monday morning meeting in Madrid.

On Sunday, Charlie Hunnam made a dapper appearance at Milan Fashion Week's Calvin Klein show.

Emily Blunt strolled through London's Heathrow airport on Monday.

David Oyelowo spoke on stage during a commemorative service to Martin Luther King Jr. on Monday in Atlanta.

Kate Middleton made a Monday appearance in London.

Russell Crowe snapped a selfie with a fan at the Monday premiere of The Water Diviner in Seoul, South Korea.

Jennifer Lopez made a pit stop on Good Morning America on Monday in NYC.

Dane DeHaan, Miles Teller, Ansel Elgort, and Filippo Timi made a good-looking group at the Prada event during Milan menswear Fashion Week in Italy on Monday.

Kristen Stewart and Alicia Cargile grabbed coffee together on Thursday.