Pop singer Christina Aguilera has so far obstinately refused to officially confirm her pregnancy but that developing baby bump as well as some recent specific shopping are sure giveaways.

Christina, 26, and husband Jordan Bratman, 30, visited the exclusive West Hollywood boutique Bel Bambini this weekend, selecting items for a baby registry, reports People.com.

Joined by her mother-in-law and her sister-in-law, Christina happily looked through the store’s products, selecting a number of items for her upcoming baby shower, including blankets, diaper bags, bottles and clothing, reports the magazine.

Christina and Jordan, a music marketing executive, reportedly began dating in 2002. They announced their engagement in early 2005 and married that same year, on November 19.

The singer has been unusually discreet about her private life and free time, considering the various disasters happening around her: Lindsay Lohan, Paris Hilton, Nicole Richie and, of course, Britney Spears.

While Christina reportedly told employees at Bel Bambini about being pregnant and excited with the experience, she has not commented on the pregnancy rumors yet. In early September, Paris Hilton let the cat out of the bag in an impromptu announcement, Paris-style.

Christina was hosting a pre - MTV Video Music Awards party in Las Vegas when Paris got hold of the microphone and said: “Congratulations to the most beautiful pregnant woman in the world. You're gorgeous,” reports People.

As to going out and offering the paparazzi some work, the singer has said she and her husband of nearly two years prefer each other’s company. “We still go out but I'm not into the whole Hollywood party scene. I know I could have gone down that route and I'm so grateful I never did.”

Who would have guessed such a path for Christina, after her raunchier “Dirrty” era?