Valentine's Day is tomorrow, and we're celebrating with a look back at some of the hottest celebrity PDA pictures. From sweet kisses and romantic embraces to vacation cuddling and red-carpet cuteness, there are plenty of ways stars show their love. Click through to see Diane Kruger and Joshua Jackson, Rachel McAdams and Michael Sheen, Tom Cruise and Katie Holmes, Brad Pitt and Angelina Jolie, and Read more

Relationships come and go in Hollywood, and while some stars are just beginning a new love affair others have stood the test of time with their significant other. Jessica Simpson and Eric Johnson are adding to their family this year while Robert Pattinson and Kristen Stewart are taking things slow. Johnny Depp and Vanessa Paradis have been together over a decade and new couple Emma Stone and Read more

Kate Middleton, wearing a dress from the UK store Jesire, undertook a solo appearance this evening in London. With her husband, Prince William, away in the Falklands, she's now focusing on the institutions near to her heart. At the end of 2011, Kate announced her plans to become a royal patron of London's National Portrait Gallery. She has a long-standing interest in painting, having studied art Read more

Prince William and his wife Kate spent the last week together on vacation with her family in Mustique. The couple spent a few days on the West Indies island with her sister Pippa, brother James, and parents Michael and Carole. William apparently met up with the group after the Middletons started their fun. He arrived, however, ahead of the celebrations for Carole Middleton's 57th birthday. The Read more

Prince William and Kate Middleton took their new puppy for a stroll in Wales last week. The family of three took a walk along water in their current hometown of Angelsey. It was the first time the Cocker Spaniel was seen with William and Kate, and palace officials have since confirmed that the dog is, in fact, theirs. A spokesperson said the spaniel is "a few months old" and came from "a close Read more