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Jennifer Aniston went Christmas shopping in Beverly Hills on Wednesday, and we weren't quite able to get a glimpse at her belly, but she was in an awfully good mood!

After a trip to Barneys last weekend with fiance Justin Theroux, we've been wondering why Jen kept her stomach covered with a sweater, and now that she's cleared her movie schedule for the next year, it does seem like there could be a bun in the oven!

And if that isn't enough evidence that the 43-year-old actress is preggers, a source tells the Daily Mail that Jen skipped out on sushi and alcohol at the party she and Theroux threw earlier this month. "They had a margarita bar, but she didn't go near it, opting for water instead. It was so unlike her and didn't go unnoticed. She was also picky with what she ate, and didn't touch the huge sushi platter, which is one of her favorite foods," an insider told the site.