Happy Birthday, Harry Styles!

While the One Direction heartthrob may 'feel olllllllllllldddddddddddd,' his fans lighten the mood with warm birthday wishes.

Happy birthday, Harry Styles! Today, the One Direction star turns 19, and while he may "feel olllllllllllldddddddddddd," he should also feel loved. Fans, and even one of his One Direction pals, have all taken to Twitter to send birthday greetings to the shaggy-haired heartthrob.

The guys are currently rehearsing for their forthcoming world tour, which kicks off next month in London, but there seemed to be enough time during rehearsals for Niall Horan to wish his best mate a good one. "Happy birthday to my youngest brother @Harry_Styles," he wrote. "have a good one me aul son."

MTV Buzzworthy Celebrates Harry's 19th With The Best Harry GIFs!

In addition to that colorful birthday wish, fans have also turned up the volume on their birthday greetings for the 19-year-old, sending him virtual love of all sorts, including a lot birthday-themed fan art they've created just for the singer's big day.

"@onedirection happy birthday bro @harry_styles" ‏@javierfromero wrote, including a sketch of the singer. "A drawing done for me. I hope you like it .. x"

@1D_TMH_Love created an extensive tribute to the singer using all sorts of photos of Harry to create a montage of his hottest moments, writing, "Happy Birthday Hazza. @Harry_Styles." And @1dinpion made a card for Harry, the singer's dimpled face as the main image. "Happy Birthday, @Harry_Styles We love you, thank you for everything. this card is for you."

Of course there were lots more birthday wishes for the busy singer. @KateSmiler1123 wrote, "It's 1st of February and Happy Birthday @Harry_Styles I wish you the best you're amazing." ‏@vikii_1D added, "Happy birthday to my cheeky and adorable hubby @Harry_Styles:)) Have a good day! Love you! :) xxx."

‏@meganashleylove, meanwhile, used her birthday wish to declare her love for the singer, writing, "it's my future husband's 19th birthday you guys! happy birthday@Harry_Styles :D i hope you have the best day ever! <3 :) love meee."

Another fan, @WeLove1Derland, noted that the singer has come a long way from the "X Factor" three years ago. "He's accomplished so much at only nineteen! Happy Birthday Harry," she wrote, including an image of a quote Harry shared about his dream of wanting to one day be a professional singer. (We guess sometimes dreams do come true!)

And the singer is about to accomplish more in his last year as a teenager. One Direction will kick off their big world tour in February with stops all around the world before landing Stateside this summer. They will spend part of the year filming their Morgan Spurlock-helmed 3-D movie, set for release in August.

Share your birthday wishes for Harry Styles in the comments!