mug for
写真で見比べてみるとすごい変貌ぶりです。
From Good Girl to Gangsta: Evolution of Miley Cyrus
Miley Cyrus has been transforming her appearance in recent months, and on Wednesday she capped off her new look with shiny gold teeth.
The 20-year-old singer-actress proudly mugged for cameras at the This Is Myspace event in Los Angeles, showing off her sparkly gold grill. She went full-on gangsta with a cropped pleather top paired with a combination denim-sweatpants bottom, leather jacket, pointed white heels and plenty of gold and sparkly bling draped around her neck.
http://abcnews.go.com/Entertainment/good-girl-gangsta-evolution-miley-cyrus/story?id=19393001#
自動詞のmugは「（舞台・カメラの前で）おおげさな演技をする、しかめ面をする」という意味です。（『ジーニアス英和辞典 第4版』大修館）LDOCEを見ると"to make silly expressions with your face or behave in a silly way, especially for a photograph or in a play"とあります。
「ハンナ・モンタナ」の頃の爽やかだったティーンアイドル時代が懐かしいですね。(Hatahata)
