CAGUILERA090707_18.jpgChristina Aguilera CAGUILERA090707_12.jpgEven an ever-expanding baby belly can't keep Christina Aguilera away from the stores - on Saturday, the golden-voiced goddess and her husband Jordan Bratman spent nearly the entire afternoon perusing the selections at Maxfield and Fred Segal. Remarkably, however, she never showed a single sign of exhaustion - she even had time to send a smile and a (very very brief) thumbs-up to Britney on the eve of her big VMAs performance! (Those Mouseketeers sure stick together, huh?)