By Meredith Lepore
Updated Dec 22, 2014 @ 7:15 am
Monica Schipper/Getty Images

It's all about the birthday today for Meghan Trainor! The singer is celebrating her 21st birthday. We hope it is a memorable one! It has been a big year for Trainor who bursted on to the scene with her hit "All About That Bass", which she also wrote. The Nantucket native, who now resides in Nashville, wasn't even supposed to record the song (Beyoncé actually was considered at one point), but her demo track was so good that she was immediately signed by L.A. Reid to Epic Records. "All About That Bass" was released at the end of June and became the number one song in the country less than two months later, which, according to Forbes, is a feat unheard of for a new singer.

And clearly she is no one-hit wonder as her latest single, "Lips Are Movin'" is number four on the Billboard Hot 100 currently. Her full-length debut album will be released in January. Though she is young, Trainor has been working in the music biz for years, penning songs for bands such as Rascal Flatts and Sabrina Carpenter. She is nominated for both Record and Song of the Year at the upcoming Grammy Awards. Happy Birthday Meghan!