Anthony Joshua during the celebration
Anthony Joshua's 30th birthday celebrations were gatecrashed by drug testers - just as he was about to tuck into a massive chocolate cake.
The British star, 30, is gearing up for his rematch with Andy Ruiz Jr in Saudi Arabia on December 7.
Even when celebrating his big 3-0 he couldn't escape his pre-fight preparations, as his day was ruined by a surprise drug test.
In a video shared on social media, Joshua's pals can be seen bringing out a humongous cake - only for the doping testers to arrive.
Joshua was forced to give a blood sample - and probably didn't have any cake either.
The Watford boxer has massively trimmed down in recent weeks as he looks to become quicker and more mobile - shedding plenty of muscle mass in the process.
Anthony Joshua's blood sample was taken
Joshua lost his first-ever professional fight to Ruiz in June, in one of the sport's biggest shocks - and is set to more than DOUBLE his net worth from the upcoming rematch.
And fans are thrilled that he looks "more like a boxer than a bodybuilder" now as he looks to exact revenge.
One fan said: "Joshua looks a lot better now he's shedded the weight. Like he just wanted to pose for Instagram before."
A fellow user wrote: "Yes AJ. The 2014/15 lean, mean, hook-wielding, uppercut-throwing machine is back by the looks of things."
Another commented: "Anthony Joshua cutting plenty of weight for his rematch with Andy Ruiz Jr is absolutely what's needed."
A fellow user posted: "AJ appears to have lost some muscle mass which is great, he was better when not as big."
Another wrote: "AJ was way too heavy for the first fight. This time he's already shaved all that muscle off. Light work this time, he's going to ruin Ruiz."
Source: The Sun UK