What a difference a year makes.

On February 21, 2009, we did not wish Ashley Greene a happy birthday. In fact, we had not even written a single article about the actress at that point.

But now we're excited send best wishes to the Twilight Saga star on her 23rd birthday and we encourage readers to do the same.

Over the last few months, Greene has exploded onto the celebrity gossip scene, mostly due to her role as Alice Cullen in Twilight and New Moon; but a series of naked photos didn't hurt her fame, either.

She may be fully clothed in the montage below, but these pictures are still worth a look or two dozen...

Two other stars also celebrate birthdays today: Corbin Blue is 21, and Jennifer Love Hewitt is 31. We've posted a few images of these celebs below. Don't forget to include them in your birthday wishes...