Britney Spears and Kevin Federline both spent the weekend in Las Vegas – but by all accounts, they did so separately. Brit was there to celebrate Father’s Day with her dad, while Kevin was there to celebrate his own Father’s Day… albeit without his kids. Kevin was busy receiving an award for Father of the Year from Prive nightclub. Whoever thought a club would be handing out awards to doting parents? Can you say “cheap attempt to get quasi-famous people to hang out there?”

According to a source inside Vegas’ Mirage Hotel & Casino, where Brit and dad were holed up for the holiday, the singer spent her afternoon in Siegfried & Roy’s Secret Garden and Dolphin Habitat at The Mirage. “She swam side by side with the dolphins at the resort in a private pool,” says the insider. “Later she gushed over Siegfried & Roy’s six-week old tiger cubs in their special nursery at the Secret Garden taking pictures of the cubs with a female friend.”

The singer was so enamored, she even stopped by the habitat’s gift shop to pick up a plush tiger and plush lion, perhaps for her boys back in L.A.

[From OK Magazine]

Britney had to have her extensions redone after swimming with the dolphins. I can’t imagine how confusing it must be for a dolphin to look up and see Britney Spears next to it, trying to hang on to her matted non-human hair. If I were a dolphin, I’d get my ass to another pool before she clogged up the drain.

Brit spent the rest of her day at a topless-optional pool, though by TMZ’s account she kept her top on – though wore a sun dress so short she nearly exposed her bottom on several occasions.

K-Fed didn’t just party it up with a few friends in Vegas – he brought along his lawyer. Because nothing says “Good Times!!” Like Mark David Kaplan.

Looking dapper in a black suit and red tie, Federline, 30, arrived at Prive just before 1 a.m. with an entourage of about 30, including his divorce lawyer Mark Vincent Kaplan. At a VIP table, Federline nodded his head to several hip-hop songs and paid little attention to the risqué fashion show that was happening on top of the club’s deejay booth.

At around 2:30 am, Federline headed to the back kitchen of the club, where he was presented with a “Father of the Year” trophy out of the public eye, an honor he told reporters “surprised” him.

[From People]

I doubt K-Fed was all that surprised, considering the club announced the “honor” several weeks ago. Before you think he’s actually a terrible dad, spending Father’s Day in Vegas while his kids are at home in L.A., People reports that he jetting home early Sunday morning to spend the day with Jayden and Sean.

It sounds like both Britney and Kevin had a good weekend and behaved themselves. You’d almost think they were semi-normal, real adults or something.

Here’s K-Fed arriving at Prive to be honored as ‘Father of the Year’ as part of Father’s Day weekend on Saturday. Header of Britney from June 10th. Images thanks to WENN.