Florence Pugh received an Oscar nomination for best supporting actress for her role as Amy March in "Little Women."Her older brother is HBO's "Game of Thrones" actor Toby Sebastian.He congratulated her on Tuesday for her nomination with a photo and heartfelt message on Instagram."You have worked your arse off and you've been exquisite in every single one of your performances. Proud doesn't cover it," Sebastian wrote.The actress left a comment that said, "Love you big time Tobias. Kisses over to you for all your big brother love. Tennis when I get back.."Many fans didn't realize that the actors were related and expressed their shock on Twitter.Visit Insider's homepage for more stories.Toby Sebastian couldn't help but applaud his younger sister Florence Pugh on Tuesday following her first Academy Award nomination.The 27-year-old actor, who played Trystane Martell of House Martell in HBO's "Game of Thrones," shared a photo of himself hugging Pugh, whose role as Amy March in "Little Women" scored her an Oscar nomination for best supporting actress."Today my friends, she's been nominated for an Oscar. Yes, an OSCAR. You have worked your arse off and you've been exquisite in every single one of your performances. Proud doesn't cover it," he wrote.The 24-year-old actress left a comment that said, "Love you big time Tobias. Kisses over to you for all your big brother love. Tennis when I get back.." 4 years ago this girl was nominated for a Critics Choice Circle Award. 2 years later she was nominated for the @bafta Rising Star Award. Today my friends, she's been nominated for an Oscar. Yes, an OSCAR. You have worked your arse off and you've been exquisite in every single one of your performances. Proud doesn't cover it. Congratulations fatso, I love you ' A post shared by Toby Sebastian (@tobysebastian1) on Jan 13, 2020 at 10:13am PSTon Jan 13, 2020 at 10:13am PST Although both Pugh and Sebastian had sizable roles in "Little Women" and "Game of Thrones," respectively, many fans didn't realize that the two were related ' likely due to the fact that they have different last names.how am i just realizing florence pugh's brother was in game of thrones...' saoirse ronan love bot (@shackiehroonen) January 11, 2020I was today years old when I found out that the guy who plays Trystane Martell in Game of Thrones if Florence Pugh's brother !' pic.twitter.com/FgQJ7mVDke' Saoirse Ronan's Oscar Campaigner (@JoLucyBradley) January 9, 2020When you find out Trystane Martell in Game of Thrones was played by Florence Pugh's ACTUAL BROTHER Toby pic.twitter.com/3ko2gcr7mj' Mona Moussa (@Monaldo86) December 30, 2019sometimes i think my life is weird but then i remember florence pugh's brother was in game of thrones' margaux' (@wonderfulwidow) October 23, 2019so was no one going to tell me that the actor who played trystane martell i'm GoT (toby sebastian) is florence pugh's brother.....the genes of this family like wtf. pic.twitter.com/5o6GsWhRK7' mia tsuchida (@mktsuchida) January 16, 2020FLORENCE PUGH'S BROTHER IS TRYSTANE MARTELL FROM GOT pic.twitter.com/z2kE0jtrlg' natalie (@ughnats) January 9, 2020Some people were less concerned with the connection between the two stars and instead focused on Pugh's "hot brother."Florence pughs brother I am free Friday night you can pick me up on Friday night when I am free ' https://t.co/KNkhmMsvDY' '''''''' ''' (@peachfuzzin) January 16, 2020florence pugh brother on my mind pic.twitter.com/72CsX3YVAl' lisa '' (@Ieonqrdo) January 16, 2020we're pivoting from adam driver to florence pugh's brother ladies https://t.co/IaSkoCaFn5' justice for uncut gems (@yaznotyasss) January 16, 2020Florence Pugh's brother I am free to hang out on Thursday please respond to this and hang out with me when I am free on Thursday https://t.co/5npIiNJfSj' hales (@haleyhelmet) January 16, 2020JUST FOUND OUT ABOUT HOW HOT FLORENCE PUGH'S BROTHER IS IM DEVASTATED pic.twitter.com/kC6fiZo6gr' KB (@jeanskort) January 16, 2020how can i be attracted to florence pugh and her brother pic.twitter.com/TU5rn9ngEd' Persephon' (@Haley_Alaine) January 16, 2020Sebastian and Pugh were both born in the UK and spent a portion of their childhood in Spain with their two other siblings, actress Arabella Gibbin and Rafaela Pugh. They've consistently supported each other as their careers began to catch steam.The actors attended the 2015 London Film Critics' Circle together following Pugh's 2014 film debut in the movie "The Falling." Pugh's costar Maisie Williams also played Arya Stark in "Game of Thrones" alongside Sebastian. London Critics Circle Awards with little sis @florencepugh .. #bluesteel #londoncriticsawards A post shared by Toby Sebastian (@tobysebastian1) on Jan 20, 2015 at 1:41am PSTon Jan 20, 2015 at 1:41am PST In 2019, he joined his other siblings in Paris to accompany Pugh while promoting "Little Women." A wonderful evening celebrating @littlewomenmovie with this gorgeous one @florencepugh. It's out 25 Dec. Make sure to go see it whilst it's on the big screen, it's bloody wonderful! Thank you @paulsmithdesign for suiting and booting! ''' A post shared by Toby Sebastian (@tobysebastian1) on Dec 17, 2019 at 12:15am PSTon Dec 17, 2019 at 12:15am PST Siblings take Paris '' A post shared by Toby Sebastian (@tobysebastian1) on Dec 13, 2019 at 1:12am PSTon Dec 13, 2019 at 1:12am PST Pugh has also done her part to promote her brother's work. She suggested her followers watch her brother play Andrea Bocelli in the 2017 biographical film "The Music of Silence" and more recently shared his music. MY BIG BRO's FILM The Music of Silence IS LOOKING CRACKING. Apparently there's some posters flying around Italy' Go find them quick! #themusicofsilence #andreabocelli A post shared by Florence Pugh (@florencepugh) on Sep 29, 2017 at 1:29am PDTon Sep 29, 2017 at 1:29am PDT GUUUYYYZZ! My beautiful big bro @tobysebastian1 has spent the last year writing, singing and tapping his way to creating some gems. His single No Money is out next Friday, 28th June on all platforms and THEN AN ENTIRE EP THE FOLLOWING WEEK. Get ready for some summer toons ' #tobysebastian A post shared by Florence Pugh (@florencepugh) on Jun 22, 2019 at 2:46am PDTon Jun 22, 2019 at 2:46am PDT Despite the actress's whirlwind season of nominations, Pugh and Sebastian have seemingly maintained a goofy, lighthearted sibling relationship."Clutch your bro and the tequila, everything else will sort itself out," the actress wrote in June 2019. Clutch your bro and the tequila, everything else will sort itself out. #soproudofhischesthair @tobysebastian1 ' '- @olivealicemchugh fanks bbz A post shared by Florence Pugh (@florencepugh) on Jun 7, 2019 at 4:41am PDTon Jun 7, 2019 at 4:41am PDT Join the conversation about this storyNOW WATCH: Most maps of Louisiana aren't entirely right. Here's what the state really looks like. Click here to read full news..