Usher  turns 37 on Wednesday, so what better way to celebrate the seductive star than with a look at some of his hottest moments? The singer is known for his stellar physique and amazing six-pack, but that's not all. Over the past few years, we've seen Usher transform from pop star to doting dad with his sons Usher Raymond V — who goes by Cinco — and Naviyd. We couldn't possibly highlight Usher's sexiness without his sweetness, so we've rounded up photos showing both of his amazing sides. Happy birthday to Usher!
Usher  lost his shirt in the video for "Good Kisser" in 2014.
He and Shakira  got silly on the red carpet at an event for The Voice in April 2014.
Usher  got up close and personal with fans during his performance at the iHeartRadio Music Festival in September 2012.
Usher  famously bid $12,000 for a Goldendoodle puppy at the Pencils of Promise Gala in October 2012 — look how excited he was about his win!
At the 2000 Teen Choice Awards, he exposed his abs while wearing all-white.
Usher  flexed his muscles during a March 2012 performance in Johannesburg, South Africa.
He shared a cute bro-ment with his fellow Voice coach Blake Shelton at a fundraiser for his charity in July 2014.
He showed off his shirtless  body on the cover of Men's Health's November 2013 issue.
This photo of Usher  cuddling his dog Scarlett in September 2014 made us melt.
Usher  performed at the 2008 NFL Kickoff Concert, losing his tight white tank top mid-song.
He slid across the floor in the video for "Confessions Part II" in 2004.
Things got a bit steamy while filming a music video in New York City in August 2011.
The singer shared this adorable collage when his son, Cinco, lost his first tooth in March 2013.
Usher  couldn't help but rub Alicia Keys 's growing baby bump while backstage at the iHeartRadio Festival in September 2014.
He gave a sexy performance with a female dancer onstage at the Latin Grammy Awards in November 2011.
Usher  shared this heartwarming photo of himself and his "Nanny" on her birthday in February 2014.
Usher  flirtatiously took his jacket off during an episode of The Voice in 2013.
He smooched Martha Stewart  at a charity event in October 2013.
Usher  gave a glimpse of his abs in this Instagram selfie in October 2013.
His guns (and hot tattoos) were on display during his CBS Early Show performance in 2010.
Usher  looked soulful and sexy while onstage at the BET Awards in July 2012.
Usher  brought on the brights in a blue suit at the Billboard Music Awards in May 2012.
In March 2014, Usher  adorably visited his son Cinco during lunchtime at his school.
He and Naviyd rode go-karts together on Father's Day  in 2014.
He shared sweet photos of himself and his well-dressed boys, Usher  V and Naviyd, on Father's Day  in 2012.
He looked chic while performing on Good Morning America in May 2008.
Usher  and his puppy Scarlett snapped a sweet selfie in December 2012.
Usher  beat the Summer heat in a tight black tank top while performing at the Thisday Africa Rising Festival in July 2008.
He shared a snap while playing a game of Connect Four with his son Usher  Raymond V in August 2013.
Usher  bared his biceps while performing in Belgium in March 2011.
He danced in his boxers and bathrobe in the "U Don't Have to Call" video in 2001.
Usher  showed off his boxing skills — and rock-hard stomach — in 2012.
He showed off his boxing savvy on his Instagram account in July 2012 and included the caption: "Gettin ready!"
Usher  planted a kiss on his mentor, Jermaine Dupree, in this throwback photo from October 2013.
Usher  rehearsed for the 2004 VMAs sans shirt and with fake rain falling in the background.
Usher  brought Justin Bieber 's smallest fans, Usher Raymond V and Naviyd, to the premiere of the singer's film Never Say Never in 2011.
The doting dad shared a group of adorable photos of Usher  V and Naviyd on Father's Day  in June 2012.
We got a good hard look at Usher 's physique when he shared a photo of himself at the gym in 2012.
Usher 's boys came to visit him on the set of The Voice in 2013.
Usher  and Naviyd got silly and smiley for the camera in this October 2012 Instagram snap.