The "New Romantics" singer was dressed in black from head-to-toe, while Aldridge, 30, kept it cool and casual in a chic white dress and floral handbag. Prinsloo, 26, gave us a slight peek at her growing belly in a satin gold dress, which she paired with a leather jacket and metallic flats.
The trio began their adventures with dinner at Gracias Madre, an all-vegan, organic Mexican restaurant in West Hollywood, California.
Before meeting up with Swift, the two VS Angels passed the time by shopping around for baby toys at Bel Bambini, an upscale baby shop located just a few blocks away from the restaurant.
At some point during their outing, Prinsloo opened up her Snapchat and took selfies using the app's popular filters. She posted one of them to her Instagram, simply captioning it, "Sup?" with an alien emoji.