Billboard has released their weekly top 40 radio update. (July 8, 2013)
Robin Thicke blasts 4-1 on Billboard’s Mainstream Top 40 chart with “Blurred Lines,” featuring T.I. and Pharrell (Interscope), the chart’s Greatest Gainer (up 2,257 plays), placing Selena Gomez's "Come & Get It" at #2.
Gomez, who has been accused of using payola to get her #1 (which evidently failed), released a video of her reaction of her topping radio (on an unofficial chart found by her team), which can be seen below.
She was #1 on mediabase at least, I've seen artists celebrating being #1 on there before. Like Ciara tweeted when she got #1 on mediabase, even though she wasn't there officially (yet).