New Year Tweets: 13 Celebs Wish You a Happy 2013

Live Times Square New Year's Eve Webcast: Watch Train, Cassadee Pope

Katy Perry, One Direction, Rick Ross, No Doubt, Taylor Swift and more tweeted their Happy New Year thoughts.

2013 came in with a flurry on Twitter via musicians like Katy Perry, Carrie Underwood, Rick Ross, No Doubt and PSY, who all found ways -- in 140 characters or less -- to say Happy New Year. From admonishments to party hard, pics with MC Hammer and blessings to fans, we picked 13 of our favorite pop star tweets to help you celebrate the start the new year off right.

• PHOTOS: Stars on New Year's Eve
• VIDEO: Justin Bieber NYE Preview
• VIDEO: Taylor Swift Performs, Kisses Harry Styles in Times Sq.
• VIDEO: PSY Celebrates in 'Style'
• TWEETS: Stars Ring in 2013
• INTERVIEW: Ryan Seacrest Talks 'Rockin' Eve,' Dick Clark
• VIDEO: Flo Rida NYE Preview
• VIDEO: OneRepublic NYE Preview
• REVIEW: Jay-Z & Coldplay's Brooklyn NYE Show
• VIDEO: The Wanted NYE Preview
• VIDEO: Ellie Goulding Q&A
• VIDEO: Justin Bieber Rocks NYE
• PHOTOS: Inside Lake Tahoe's SnowGlobe 2012 Festival
• VIDEO: Greyson Chance Q&A
BACKSTAGE: 'Dick Clark's New Year's Rockin' Eve'