Sharon Horgan, Siobhan McSweeney, Anne-Marie Duff and Lisa McGee all won awards at last night's BAFTAs.
The annual ceremony took place in London last night and saw many famous faces on the red carpet.
After an already successful year, Bad Sisters and Derry Girls have been cleaning up at recent award ceremony's.
Sharon Horgan won best lead actress at the IFTAs last Sunday while Lisa McGee won best drama script.
Sharon Horgan and Anne-Marie Duff won awards for their involvement in Bad Sisters which won TV award for best drama series.
In Horgan's acceptance speech, she said she is in "solidarity" with the US writers' strike.
She said: "It all begins and ends with the writers so we are in solidarity with our WGA brothers and sisters."
Sharon also said Bad Sisters was "really hard" to shoot but that the cast and background team were fantastic.
Meanwhile Derry Girls creator, Lisa McGee accepted her award for her creativity and thanked Channel 4, asking it to "please never change" and thanking "our first home, Derry".
The first winner of the night was Siobhan McSweeney who plays Sister Michael in the Channel 4 hit series, Derry Girls.
She had the audience in floods of tears with her hilarious acceptance speech.
She said: "So I’ve been warned not to do a political statement, so as my mother laid dying in Cork, one of the very last things she said to me was would I not consider retraining as a teacher.
"If she could see me now, getting a Bafta for playing a teacher. Joke’s on you."
"You are everything"
She also praised the people of Derry: "To the people in Derry, thank you taking me into your hearts and your living rooms.
"In the words of my beloved Sister Michael, 'it's time they started to wise up'."
McSweeney also thanked Lisa McGee for all her hard work and "for not listening to me when I said I could play all the girls parts".
Bad Sisters' Anne-Marie Duff won the best supporting actress award at the BAFTAs last night.
She thanked her team and everyone who supported her and the series.
"If someone is in their life who is bullying them who is telling them that who they are is wrong, that what they are isn't enough. I am telling you now you are everything."
