Ruby Rose thinks her likeness to Justin Bieber must be ''frustrating'' for him.

The 'Orange is the New Black' star has acknowledged she looks similar to the 'Boyfriend' hitmaker and confessed she has heard he regularly gets mistaken for the 29-year-old actress.

Speaking on 'Conan', she admitted: ''I hear that he gets asked a lot if he is Ruby Rose. And it must be very frustrating for him.''

After Conan O'Brien pointed out her doppelgänger, she went on to reveal the celebrities who she thought he resembled, claiming he looks like a mix of actresses Meryl Steep and Tilda Swinton, as well as 41-year-old 'The Great Gatsby' hunk Joel Edgerton.

She said: ''I feel like you can relate because you look like a mixture of Tilda Swinton, Meryl Streep, and like ... Joel Edgerton.

''You'd be like their love child.''

The 52-year-old TV host took the suggestions in jest, thanking her for adding a man into the mix so he was a bit more ''butch'', going on to joke he sees Dame Judi Dench and Betty White in himself.

He quipped: ''I like that it's three and two are women. I'm glad that you threw one guy in there. Just to butch it up just a little bit for me.''