Britney Spears birthday couldn't have been more complete as a customized design cake does the works!

People reported that the singer's boyfriend, Charlie Ebersol, designed a cake for his girlfriend to show her how much he loved her.

A source lets People in on the scoop of Britney Spears birthday cake:

"Charlie really wanted to design something for her and it was all him,"

"He thought of it all from beginning to end."

Ebersol got some help decorating the cake from a do-it-yourself cake company in Los Angeles, Duff's Cake Mix. The showcased a pink, black and gold confection. The cake was made of the confetti cake mix that is a signature product of Ace of Cakes star, Duff Goldman. Vanilla buttercream frosting completed the delicious finished pastry product in honor of Britney's birthday.

Charlie sure did not waste time in making his superstar girlfriend feel special on the momentous day of her life.

The source added:

"It's a really fun celebration cake,"

"He really did put a lot of time and thought into it and it was very sweet. He's a good boyfriend."

Britney couldn't hide her delight on the efforts Charlie has made to make her birthday special. Britney tweeted:

"Couldn't have wished for a better birthday yesterday... Hello, 33! #Club33."

Britney Spears birthday was more than just a celebration. The event was a showcase of love between Charlie and Britney!