Adele has recalled feeling “really, really nervous” after finding out Lady Gaga was in the audience at one of her shows.The British singer recalled the experience during a new interview with The Hollywood Reporter, explaining how she became anxious knowing that the pop icon was in the audience.The moment occurred at one of her ‘Weekends With Adele’ residency shows at the Caesar’s Palace venue in Las Vegas, when she knew that the ‘Shallow’ singer would be in attendance for the night.“There’s been one [celebrity] there that I shit myself the whole show: Gaga,” she recalled to the outlet. “And I’ve spent a bit of time with her, but I rate her so hard.”“I was like, ‘The show’s terrible. It’s rubbish.