Comedian Jack Whitehall has had a meteoric rise to fame - but apparently still gets nervous when meeting other A-listers.
In fact, one verbal slip up made his meeting with pop queen Rihanna really awkward.
Speaking on The Jonathan Ross Show, Jack revealed that Rihanna had requested to meet him after he had hosted the British Fashion Awards several years back.
The 31 year-old recalled: "I met her after I hosted the Fashion Awards and I'd done quite well and they were like, 'Rihanna would like to meet you. Would you like to come and see her at the after party?'
"She had her own cordoned off area and I was ushered in and I think I panicked a little bit and sort of forgot how to formulate proper sentences.
"I was like, 'What do I say? What's my opening gambit?'
"And all I could think of was that she does coconut water adverts. So my opening line was, 'I really like coconut water as well.'
"She ignored me for the rest of the night."
Actor Aaron Paul, who was sat next to Jack on the sofa, had a rather more pleasant first meeting with the Work singer.
Rihanna's a fan of Breaking Bad, in which Aaron starred as Jesse Pinkman alongside Bryan Cranston's Walter White.
He revealed: "Rihanna, I had never met before and I was standing outside and this SUV stops and the door opens and Rihanna jumps out and starts running in my direction.
"I turned - Who is she running to? There's no one behind me and she throws her arms around me and kisses me on the cheek and says that she loves me.
"I'm like, 'Oh my God! I love you too! This is great!'
"She was like, 'I just needed proof of this,' and then she posed for some paparazzi and then posted this picture on Instagram , 'My life has been made, Pinkman for President!'"
