Hilary Duff pregnant baby bump sunglasses sweats blue sneakers shirt black maternity pilates class purse yellow water bottle

Hilary Duff continued her nearly daily prenatal pilates routine on Wednesday, but there was something a bit different when she walked out of the Toluca Lake class this time.

Even with all the workout gear and spandex, it's been tough to notice much of a difference in Hil's bod lately. But the sheer black long sleeve top and light blue sweatpants that she wore today showed off a plumper figure -- and a sign of that elusive baby bump!

The actress, 23, has been keeping up a regular routine in the weeks since she's announced her pregnancy -- lots of exercise and shopping!