Emma Roberts was star struck when she met Jennifer Aniston.

The 22-year-old actress - who stars alongside the blonde beauty in new comedy movie 'We're The Millers' - admits she was blown away when she met the 'Horrible Bosses' star that she didn't know how to react around her.

Quizzed on what it was like meeting the Hollywood star, she told InStyle magazine: ''Surreal. When I met her she came up and gave me a big hug. I was so star struck I froze with my arms by my side and just said 'Hi, I'm so nervous to meet you.' ''

The 'Scream 4' actress is no stranger to mingling with A-listers as she's related to Julia Roberts, but she admits she's in awe of Johnny Depp after working with him on 2001's American Biopic 'Blow'.

She explained: ''At the time I didn't really know who he was, but now... Oh my God. I have a black and white picture hanging in my house that he signed for me saying, 'To Emma, one of the most beautiful people I've ever met.' My friends come over and they're like, 'Is this for real?' ''