April 11 is National Pet Day — celebrate the unofficial holiday by looking at adorable photos of celebrity pets below.

... As if we needed a reason to look at cute pet pictures on a Monday.

Katy Perry takes her puppy out shopping as a stowaway.

 

A photo posted by KATY PERRY (@katyperry) on

Mar 1, 2016 at 3:42pm PST

Country singer Kacey Musgraves dressed her dog like a Nashville superstar for her birthday.

 

When your dog is a country music star.. (?: @planksound) (outfit given by @johnboybaker, made by @elliemonsters) She looked dapper for her 1st bday party yesterday!

A photo posted by KACEY MUSGRAVES (@spaceykacey) on

Mar 26, 2016 at 10:35am PDT

Model Kate Upton got her pooch ready for MLB opening day with a Detroit Tigers cap, in honor of boyfriend Justin Verlander.

 

#Harley #openingday @tigers @justinverlander

A photo posted by Kate Upton (@kateupton) on

Apr 3, 2016 at 3:55pm PDT

Maria Menounos dressed to match her trio of furry friends.

 

A photo posted by maria menounos (@mariamenounos) on

Apr 4, 2016 at 2:20pm PDT

Actress Emmy Rossum takes a ride with her pup.

 

A photo posted by Emmy Rossum (@emmyrossum) on

Mar 28, 2016 at 9:32am PDT

Kevin Bacon takes a walk with his “granddog.”

 

The #GrandDog and I out for some "special time" @realsosiebacon

A photo posted by Kevin Bacon (@kevinbacon) on

Nov 19, 2015 at 8:03pm PST

Julianne Hough has breakfast with her pup.

 

Morning! ??????? #harley #bedhead

A photo posted by Julianne Hough (@juleshough) on

Apr 2, 2016 at 9:41am PDT

Miley Cyrus spends some time in bed with her cat Harlem.

 

Harlem my little baby girl ??

A photo posted by Miley Cyrus (@mileycyrus) on

Mar 20, 2016 at 5:51pm PDT

Martha Stewart’s puppy Peluche wants some attention.

 

A photo posted by Martha Stewart (@marthastewart) on

Mar 23, 2016 at 5:55pm PDT

John Legend and Chrissy Teigen relax on the couch with their pup.

 

romance

A photo posted by chrissy teigen (@chrissyteigen) on

Mar 6, 2016 at 9:10pm PST

Taylor Swift teases her dog Kitty with some whipped cream.

 

My mom's dog is named Kitty. And yet, she is nothing like a cat.

A video posted by Taylor Swift (@taylorswift) on

Mar 17, 2016 at 11:31am PDT

Ariana Grande gives her pup a kiss.

 

you can't even imagine how this little one has changed my life. #strauss #themouse

A photo posted by Ariana Grande (@arianagrande) on

Oct 28, 2015 at 8:14am PDT

Singer Demi Lovato’s pooch catches a flight.

 

Little boo ??

A photo posted by Demi Lovato (@ddlovato) on

Jan 5, 2016 at 9:13am PST

Model and actress Cara Delevingne’s dog also knows how to pose.

 

??? Puppy love ???

A photo posted by Cara Delevingne (@caradelevingne) on

Jan 26, 2016 at 11:06am PST

Actress Olivia Wilde shares a sweet moment with her pup.

 

Me and my old man. #adoptdontshop

A photo posted by Olivia Wilde (@oliviawilde) on

Oct 29, 2015 at 1:59pm PDT

Clint Davis covers entertainment and trending news topics for the Scripps National Desk. Follow him on Twitter @MrClintDavis.