Correct

装腔作势

/ zhuāng qiāng zuòshì / 
Strokes

Definition

posturing/pretentious/affected

Example

Definition

strike a pose; put on airs; assume an air; strike an attitude

1
Biè
别
gēn
跟
tā
她
rènzhēn
认真
  
,
tā
她
wánquán
完全
shì
是
zài
在
zhuāngqiāngzuòshì
装腔作势
  
。

Don't take her seriously. It's all act.