Today on Twitter, pop stars celebrated the best day of the week by maxin' and relaxin' -- except Cody Simpson. While the 'iYiYi' singer did make it to the beach on Friday, he was there for work, shooting his brand new 'Not Just You' video. Elsewhere in the world, 'Glee' stars Lea Michele and Chord Overstreet enjoyed a great start to the weekend, while Jessica Simpson snuggled up to Eric Johnson and Nick Jonas celebrated his entry into the last year as a teen pop idol. See what your favorite stars were tweeting today!