your luck is in

US /jʊər lʌk ɪz ɪn/
UK /jʊər lʌk ɪz ɪn/
"your luck is in" picture
1.

tu as de la chance, ta chance est là

used to say that someone is having good luck

:
You found a twenty-dollar bill on the street? Your luck is in!
Tu as trouvé un billet de vingt dollars dans la rue ? Tu as de la chance !
If you get the last piece of cake, then your luck is in.
Si tu as la dernière part de gâteau, alors tu as de la chance.