Even as a child, this singer had major star power! Just check out that adorable smile.

After winning a reality talent contest, this celeb released a number of hits and was even nominated for a Grammy! You might also recognize her from her acting work. The star appeared on 'Big Time Rush' and on Broadway. Of course, she also happens to be half of a pop music power couple! Her BF is another chart-topping singer.

Think you know who it is? Click through to see if you're right!