LORAC lipstick and drying formula
I would try NARS lipstick in Barbarella (sheer peach) or Sexual Healing (metallic peachy rose) -- they're not identical, but they're both sheer, peachy shades.
Urban Decay Lipstick in the shade Indecent and Lovechild are similar to your LORAC lippie. You can find them at: http://www.sephora.com/browse/product.jhtml?id=P21
However, if you want to keep using your lipstick and keep it from being so drying without changing the color, I would suggest applying MAC Lip Treatment which comes in a roll-up tube like lipstick, but it's colorless and will just moisten your lips before applying your lipstick over it. Sephora doesn't sell MAC, but you can find MAC online and in a lot of department stores. I would go this route first since you'd be able to keep your favorite lipstick.
I hope this helps you.