is this dress too sexy for my sister?

She would like choose a dress for a makeup party.
http://bggo.tw/scxvp
is this dress too sexy for my sister?
I don’t think she could wear this.She is 19 only.
Your proposal?

Stop dressing your sister like your mother.

You guys do realize that replying to a bot thread is grounds for an infraction right (since doing so only encourages the bots to post more on this board)?