Kildunne didn't look overly happy at first, maybe because today hasn't gone quite so smoothly, but she did unveil the lasso celebration and a big smile as she ran back to halfway.
England plunged back into the Irish half, then Zoe Harrison sent a long pass to her left and Ellie Kildunne kicked in the afterburners, gliding away from a couple of tacklers to place the ball down with one hand just in from the corner.
With Natasha Hunt limping off, and England wondering how to reshuffle their backline, Ireland taker advantage and get onto the scoresheet!
They move the ball right, scrum-half Emily Lane feeds a short pass off a maul and Amy McGann does superbly, under pressure from English tacklers, to twist around and get the ball just over the line.
Natasha Hunt is down and needing treatment, the game pauses while she is seen to.
Ireland must be frustrated that good spells, in defence or attack, have been undone by drops or charge-downs like the one that resulted in Breach's try.
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Ellie Kildunne seems to be running great ‘dummy’ lines but taking the ball. It’ll come off before long, either as the dummy or misread by the defence.
Want to also mention Maddie Feaunati - I think the very last blade of grass has just been trodden upon.
Is 54 Breach's lucky number?published at 15:47 BST
15:47 BST
England 28-0 Ireland
Sara Orchard BBC Sport rugby union commentator on BBC One
Jess Breach's 54th England try on her 54th cap, in the 54th minute of the game. She is currently joint third with Emily Scarratt in the England rankings.
After a couple of resets and some stern words from the referee, Ireland do well to clear with Emily Lane doing well to flip the ball back to Dannah O'Brien.
She clears to halfway, and Ellie Kildunne cannot get free from the green shirts that bear down on her.
An England attack is stopped by fine work from Cliodhna Moloney-MacDonald, but England then attack to the right and Ellie Kildunne looks to be slicing through.
But the full-back is stopped in her tracks and is held standing up, giving Ireland the ball at a scrum five metres out.
The replacement gets an early touch, smashing onto the ball in the centre as England spin it wide from a lineout.
Sadia Kabeya makes good yardage with a forceful run down the right, but England lose the ball in the tackle and Ireland have the chance to clear from a scrum in their own half.