She stood in front of the mirror preened after winning the prize, looking very pleased with herself.

preened 是动词 preen 的过去式，preen 本意是指鸟类用喙整理羽毛的动作，引申为"精心打扮"或"自我欣赏"的意思。这个词常带有自我陶醉的意味，暗示对自己外表或成就的满意。