Kate Spade has nice ones that don't look like diaper bags (and you could even use them as work/casual totes once your LO is out of diapers). They are pricey but sometimes get marked down and/or check RetailMeNot.com for coupon codes. Or if you live near a Kate Spade outlet (there is one at Woodbury Common in Central Valley, NY), check there.
Re: attractive diaper bag suggestions needed!
https://www.petuniapicklebottom.com/
They are expensive but someone bought mine off my amazon registry.
try https://www.storksak.com/home.php?home=home
bloomies carries them, a bit pricey also. But they look like normal bags