Celebrities had their cameras ready to snap lots of entertaining photos this week. Jenny McCarthy  shared a drink with a four-legged friend, while Eva Longoria  got a colorful makeover. Kelly Ripa  went retro with a look from the '60s, and Justin Bieber  shared reactions to his new album. Click through to see the photos we've gathered, and don't forget to follow us on Twitter  for exciting news and photos!
Justin Bieber  showed off a personal copy  of his new CD while touring in Australia.
Meet the Judges
Twitter cofounder Jack Dorsey snapped a photo  with fellow Tribeca Film Festival  judge Peter Facinelli .
Katy Perry  was thinking pink  when she chose a nail color.
Nicky Hilton  enjoyed an evening of beauty and hanging out with Fergie  at a MAC party in LA.
Make It Work
Paris Hilton  took a break from her partying to get back to work  on her fashion line.
Candace Cameron Bure invited  Lisa Rinna, Ali Landry, Nancy O'Dell, Denise Richards , and Alison Sweeney over for dinner at her place.
Modern Family 's Jesse Tyler Ferguson celebrated his trip to NYC  with a stop at Gray's Papaya.
If the Shoe Fits
Conan O'Brien  enjoyed the comfortable seating backstage  before performing to a sold-out crowd in San Francisco.
Green With Envy
Ashton Kutcher  tested the new colorful features  on Brizzly.
Say Yes to the Dress
Eva Longoria  was in a festive spirit  to join the Ballet Folklorico Mexico de Azteca in an authentic costume.
Going to the Dogs
Jenny McCarthy  needed to have a serious talk  with Chelsea Handler's dog Chunk.
It's a Bird, It's a Plane, It's a Jonas!
Joe and Nick Jonas  spotted something  mysterious on the horizon.
He's Gone Country
Ryan Seacrest  stole a moment  onstage with Shania Twain after American Idol  contestants performed her songs on Tuesday night.
Kelly Ripa  traveled back to the '60s  with the Broadway cast of Hair.
Eliza Dushku showed off  her fancy Vivienne Tam HP laptop.