Her hair was messy and her pajamas were rumpled when she got up.

rumpled 是动词 rumple 的过去分词形式，rumple 的意思是"弄皱、使起皱"。rumpled 在这里作形容词用，表示"皱巴巴的、起皱的"。这个词常用于描述衣物、纸张等因挤压或揉搓而出现的褶皱状态。