Bunki and others,
I have used Windex with success in removing acrylics from
brushes, etc. I don't know how well it would work on acrylics dried
into fabric (your clothes), but it might work ok for that, too. I have
had kids leave acrylics in brushes by the sink. I soaked them for a day
or so and have been able to save a lot of them.
Hope it works for you, too!