According to a photo from Hollywood Life.com, I think so! Her nose definitely looks thinner, especially in the tip region. It looks to me that Adele has had a very nice rhinoplasty (nose job). Overall, it matches her face better and looks graceful and elegant.
Don’t be too surprised, though. I think that a very large percentage of stars have had their noses done. Most, like Adele’s, look so subtle and natural that it’s hard to tell.
Kudos to her plastic surgeon! (Not me)