The Irish twins were voted through to the final of the annual singing competition during tonight's first semi-final (May 22).
The duo were the final act to be confirmed for a place in Saturday's final. Upon hearing the result, they cartwheeled and bounced their way across the runway to the stage to join their fellow finalists.
The so-called 'Russian grannies' Buranovskiye Babushki were also voted through to the final with their track 'Party for Everybody'.
Eleftheria Eleftheriou (Greece) have also reached the final with 'Aphrodisiac', alongside the likes of Gréta Salóme & Jónsi (Iceland) and Compact Disco (Hungary).
The second semi-final will be held on Thursday, May 24, with 18 further acts looking to reach the grand final.
The finalists so far are as follows:
United Kingdom: Engelbert Humperdinck - Love Will Set You Free
France: Anggun - Echo (You and I)
Italy: Nina Zilli - L'amore è femmina (Out of Love)
Azerbaijan: Sabina Babayeva - When the Music Dies
Spain: Pastora Soler - Quédate conmigo
Germany: Roman Lob - Standing Still
Iceland: Gréta Salóme & Jónsi - Never Forget
Greece: Eleftheria Eleftheriou - Aphrodisiac
Albania: Rona Nishliu - Suus
Romania: Mandinga - Zaleilah
Cyprus: Ivi Adamou - La La Love
Denmark: Soluna Samay - Should've Known Better
Russia: Buranovskiye Babushki - Party for Everybody
Hungary: Compact Disco - Sound of Our Hearts
Moldova: Pasha Parfeny - Lăutar
Ireland: Jedward - Waterline
Watch Jedward perform 'Waterline' on the Eurovision semi-final below: