Ouch! Looks like someone spent a little too much time at the beach last weekend!

Despite her sunburn, Hilary Duff was all smiles when we snapped her running errands in Beverly Hills this afternoon. The new mom showed off her slimmed-down figure in a pair of black skinny jeans and a print top, and she may not be back down to her pre-pregnancy physique, but she's obviously been busting her booty at the gym and Pilates! Maybe she could give Jessica Simpson a few words of encouragement?

While Hil doesn't look one bit frazzled in these shots, she's definitely still adjusting to motherhood! Earlier today she tweeted, "It's pretty much impossible to be on time when you have a baby..."