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30 August 2013, 10:26
The 'Marry The Night' singer starred opposite the Inception star in the upcoming action film.
Lady Gaga has been hailed as a "great actress" by Hollywood superstar Joseph Gordon-Levitt for her role in the new Sin City film.
The 'Applause' singer has a small cameo role in the new Robert Rodriguez comic book adaptation, and co-star Joseph says she was a "total pro" on set.
"She was in Sin City 2, I did a part for it," Joseph revealed to Boston radio station Jam'n 94.5. "Mr. Rodriguez asked me to be in, and Lady Gaga is in a scene of it.
"And I gotta say, she did a really good job," the Looper star explained. "Like, she's a great actress, and I didn't know that.
"You know, she came in and I was like, 'OK sure they're having a huge pop star do a scene in the movie, I understand', but then she came in and like, nailed it!" Joseph added. "She had her character down and she was like a total pro and did a great job, I was really impressed. So it was good to see her again."
Check out a picture of Lady Gaga after her London arrival this week below (Credit: Getty):
This week has seen Lady Gaga teasing her upcoming performance at iTunes Festival 2013 with rehearsal footage for two brand new songs called 'MANiCURE' and 'Swine'.
Lady Gaga plays iTunes Festival 2013 on 1st September and releases her new album 'ARTPOP' on 11th November.