Probably the coolest cake I've ever made

My sister graduated from law school and turned 30 in the same week.  If anything deserves a crazy awesome cake, it's that.  While she requested a cake for her party, she had no idea what was coming.  I'm pretty sure she expected a pretty and standard one or two tiered cake, but she got this.  Three "textbooks" topped with a graduation hat, all made out of lemon pound cake, filled with lemon curd (at her request) covered in modeling chocolate.  I hope she loved it, she definitely deserved it.