Celebrity·Posted on Jul 7, 2018Katharine McPhee Just Shut Down Haters Over Her Engagement To David FosterYou tell 'em, sis!by Shyla WatsonBuzzFeed StaffFacebookPinterestTwitterMailLink As any SMASH fan will tell you (before ranting about how our beloved show was cancelled well before its prime), this is Katharine McPhee. View this photo on Instagram instagram.com She also starred on Scorpion (#gonetoosoon) and is the current star of Waitress: A New Musical on Broadway. Just last week she became engaged to her now-fiancé David Foster. The pair have been dating since last May. Theo Wargo / Getty Images (FWIW, the singer/producer was previously married to Yolanda Hadid. Yep, as in Gigi and Bella.) Kat confirmed their engagement with a single emoji on Twitter, along with a gif of Ariana Grande saying, "And what about it?" Kat McPhee @katharinemcphee 💍 05:03 PM - 03 Jul 2018 Reply Retweet Favorite But, instead of letting her enjoy her engagement bliss, people have been criticizing the Waitress star. Twitter: @KingofBeerfest Twitter: @isew_isaw_imama Rude. Twitter: @PRIGomerPyle Twitter: @Zsuzsa0601 But, the American Idol alum was 👏 not 👏 having 👏 it 👏, and shut down the haters with one brilliant tweet. Kat McPhee @katharinemcphee y’all should be worrying more about registering to vote and midterm elections than who’s marrying me. thank you for coming to my TED talk. 10:44 PM - 06 Jul 2018 Reply Retweet Favorite And that's that on that! Tap to play GIF Tap to play GIF CBS Congratulations on your engagement, Kat! ❤️❤️❤️ View this photo on Instagram Instagram: @davidfoster Lmk when SMASH is coming back.