The flame-haired 'The A Team' star found it hard to avert his eyes from the busty beauty's bosoms when he was an advisor for her acts on the US version of 'The Voice', but tried hard to be as professional as possible while filming the show.
He is quoted by The Sun newspaper as saying: ''I went in and she was wearing this really, really tight white top without a bra. And I'm a 22-year-old boy and I'm meeting this girl for the first time, trying to be professional as hell.
''So I walk in there and my eyes just keep slowly going down.
''Then I kind of realise what I'm doing and my eyes go up again. So like yeah, I'm young - what can I say?''
Ed might have to get used to the sight of Christina's cleavage as the 32-year-old singer recently said she would love to work with the ''super talented'' 'Lego House' hitmaker.
She explained: ''I see a collaboration in the works hopefully. I would love to collaborate with this guy - he's super talented.''
The 'Dirrty' singer also admitted she had to take a back seat with her 'The Voice' contestants while Ed was on the show because they were all so desperate to meet him.
She said: ''Everyone is dying when they first see this guy. I am like, 'I'm secondary here.' ''
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