After a short hiatus from "The Voice" as she gave birth to her daughter back in August, the "Genie in a Bottle" is definitely back for all audiences, as can be seen by the new Starbucks Christina Aguilera image: the pop star randomly appeared at a New York City Starbucks venue and started signing autographs and serving coffee!

It seems like the Starbucks Christina Aguilera strategy was taken right from the Maroon 5 book from their "Sugar" video, when they crashed wedding parties to sing and record - it seems like X-tina's taking advice from her "The Voice" co-star Adam Levine for her big comeback!

According to Just Jared, the sweet Starbucks Christina Aguilera appearance happened last February 16, as the Grammy Award-winning singer spent her Monday afternoon at the Rockefeller Center Starbucks in New York City.

It seems that she just happened to stop by to get her own cup, but as fans recognized her, she decided to pay for everyone's coffee as well - good guy Starbucks Christina Aguilera showing up to save the day from being sleepy!

CTV reports that Starbucks' Christina Aguilera appearance caused "instant pandemonium" in the famous venue, as she paid it forward and bought all customers coffee for a whole hour - without a doubt, the "Beautiful" star was having a really great Monday when she decided to drop by and mingle with the fans and some free Frappuccinos!

"Coffee on me for the next hour! Head to 30 Rock! XoXtina," the star tweeted to promote the whole venture, and fans flooded to the Starbucks venue and posted their pictures on their Instagram account - surely she made a lot of people start their week with the right foot!

As Yahoo! News reports, the fun Starbucks Christina Aguilera day ended up all over Instagram, as fans posted photos and videos of the star giving out coffee and signing the cups along with "FREE COFFEE." Fun times!