Celebrity Sightings

Amy Poehler attends the American Comedy Awards in New York on April 26.

Bill Hader attends the American Comedy Awards in New York on April 26.

Seth Rogen attends the American Comedy Awards in New York on April 26.

Bill Cosby attends the American Comedy Awards in New York on April 26.

Aubrey Plaza attends the American Comedy Awards in New York on April 26.

Patrick Stewart attends the American Comedy Awards in New York on April 26.

Anne Hathaway hosts the Lollipop Theater Network's "Night Under The Stars" screening of "Rio 2" at Nickelodeon Animation Studio in Burbank, Calif., on April 26.

John Travolta attends a press conference during the IIFA Awards week at Hilton Tampa Downtown in Tampa, Fla., on April 26.

Kevin Spacey arrives at the IIFA Awards at Raymond James Stadium in Tampa, Fla., on April 26.

Keira Knightley attends the CHANEL Dinner in honor of the 2014 Tribeca Film Festival closing night film "Begin Again" at Tribeca Grill in New York on April 26.

Elisabeth Moss is seen in New York on April 26.

Kevin Costner performs at War Memorial Auditorium in Nashville on April 26.

Christopher Meloni attends the 18th annual Keep Memory Alive "Power of Love Gala" benefit at the MGM Grand Garden Arena on April 26, 2014 in Las Vegas on April 26.

Ricky Martin performs onstage during the 18th annual Keep Memory Alive "Power of Love Gala" benefit at the MGM Grand Garden Arena on April 26, 2014 in Las Vegas on April 26.

John Mayer arrives at Narita International Airport in Narita, Japan on April 27.

Gwen Stefani arrives at the anniversary celebration of Hakkasan Las Vegas Restaurant and Nightclub at the MGM Grand Hotel/Casino early in Las Vegas on April 27.

Sigourney Weaver reunites with her "Aliens" cast members to celebrate their iconic film at the panel discussion "Aliens Exposed" during the Calgary Comic and Entratainment Expo in Calgary, Canada on April 26.

Jason Biggs attends Milk Bookies Fifth Annual Story Time Celebration at Skirball Cultural Center in Los Angeles on April 27.

Mandy Moore attends Paris Photo Los Angeles at Paramount Studios in Hollywood, Calif., on April 27.

Naomi Watts is seen on April 27, 2014 in Los Angeles

Reese Witherspoon is seen in Los Angeles on April 27.

Spike Lee, Jim Carrey and guest attend the Philadelphia Flyers vs New York Rangers playoff game at Madison Square Garden in New York on April 27.

Susan Sarandon attends the Philadelphia Flyers vs New York Rangers playoff game at Madison Square Garden in New York on April 27.

Whoopi Goldberg attends the Philadelphia Flyers vs New York Rangers playoff game at Madison Square Garden in New York on April 27.

Mila Kunis and Ashton Kutcher seen during day 3 of Stagecoach: California's Country Music Festival at the Empire Polo Club in Indio, Calif., on April 27.

Leslie Mann is seen at LAX in Los Angeles on April 27.

George Lopez is seen at LAX in Los Angeles on April 27.

Dolly Parton performs at NorthStar Studios in Nashville on April 27.

Rihanna attends the Toronto Raptors vs Brooklyn Nets playoff game at Barclays Center in New York on April 27.

Alessandra Ambrosio is seen in Los Angeles on April 27.

Matt Damon is seen in Los Angeles on April 27.

Simon Pegg on the set of 'Absolutely Anything' in London on April 28.

Alec Baldwin attends Tribeca Talks: After the Movie: "Compared To What: The Improbable Journey Of Barney Frank" during the 2014 Tribeca Film Festival at the SVA Theater in New York on April 27.

Edward Norton attends "My Own Man" premiere during 2014 Tribeca Film Festival at SVA Theater in New York on April 27.

Michael Douglas attends Tribeca Talks: After The Movie: "Supermensch: The Legend Of Shep Gordon" during the 2014 Tribeca Film Festival at the SVA Theater in New York on April 26.