Helen, who plays Weatherfield wild child Rosie Webster, looked drop-dead gorgeous as she pulled on a boob-booster bra and poured herself into a figure hugging, cleavage-exposing dress.
And maybe the busty 36D-24-36 soap babe knew it – as she was Twittering the pics just minutes later!
The pretty 20-year-old, who recently returned to the show after a three-month break, Tweeted: “In Rosie gear having such a laugh.”
And her pal make-up artist Collette Casey posted the stunning shots writing: “@helenflanagan1 @ArtdecoMakeup what a fun makeup day we had! Sooo many looks! Can't wait to see how they look! - have fun tomozs xxxx”