Justin Bieber Enjoys Miami Hotel Poolside Surrounded By Pretty Young Things Hours Before Alleged Party Drama

Justin Bieber was spotted relaxing at Miami Beach's Fontainebleau hotel on Friday, after returning from a break on a private island where he rang in his 21st over the weekend.

Pics show the buff, almost shirtless superstar hanging poolside with friends surrounded by a throng of bikini-clad girls who appeared delighted to be in his company.

Justin was seen kicking back in a lounging chair at the luxe hotel in a pair of long, white sweats with visible, white Calvin Klein undies teamed with an open, red plaid shirt as he enjoyed the sun.

Justin Bieber
(Photo: Justin Bieber was the center of attention when a bevy of ladies crowded around him at the Fountain Bleau hotel in Miami Beach in Florida on Friday, March 6)

Justin Bieber
(Photo: The Biebs looked every inch the superstar as he sunned shirtless by the pool)

Hot on the heels of gracing the cover of Men's Health magazine with his shirtless, ripped, classic hands-behind-the-head pose, the Canadian singer appeared at ease at the hotel even though all eyes were on him.

At one point, the Biebs had fun doing the Macarena with pal, music producer Soundz.

Check out funny moment in the video below.

It's not clear what Justin is doing in Miami, since an upcoming mediation in a paparazzo-filed civil lawsuit against the heartthrob is reportedly scheduled for March 17.

The Canadian may be in Florida to spend more time with Miami-based model Yovanna Ventura, who he hung out with on the island as well as pals.

The 19-year-old was first seen with the "Where Are Ü Now" singer in March and the two reportedly had an on-and-off fling over the summer.

Justin Bieber
(Photo: The singer appeared to doze off poolside)

Justin Bieber
(Photo: Justin was surrounded by security as he strolled around the hotel)

Yovanna Instagrammed a shot of herself and the hitmaker in a cozy clinch at Justin's 21st. Naturally, it kicked off rumor mill chatter speculating that the pair are back on.

Into the mix of this, it seems model pal Hailey Baldwin -- who also partied on the island --- left abruptly to go back to New York City on Tuesday. Based on tweets she shared before boarding a plane, the Topshop model may have been annoyed about something.

Gossip sites are currently claiming she has "dumped" the Biebs. But, since both Justin and Hailey have always said that they are not dating, that seems unlikely.

Justin Bieber
(Photo: The singer looked happy as he sampled the facilities at the hotel)

Justin Bieber
(Photo: Justin looked stylish as he walked around the complex)

The singer may be conserving his energy before his Comedy Central roast is taped in Los Angeles on March 14.

In addition to roast master Kevin Hart, Hannibal Buress and Jeff Ross will attend, and new roasters were announced on Thursday.

Lifestyle guru Martha Stewart, rappers Snoop Dogg (Lion) and Ludacris, former basketball legend Shaquille O'Neal, and comics Chris D'Elia and Natasha Leggero are now on board. The event airs on March 30.

Stewart, 73, took to Twitter on Friday to confirm her shock inclusion in the lineup.

"Yes it's true! I'm roasting @justinbieber march 30 @comedycentral#bieberroast can't wait to teach him stuff," Martha wrote on Twitter.

She added, "I wonder if Justin Bieber like roast beef or roast chicken or pot roast. I have to bring a roast to the roast don't I?"

Justin Bieber

After celebrations on his big day, Justin posted a few photos to his Instagram on Thursday showing him, Hailey, Yovanna, and other pals playing a card game of Apples To Apples.

Other shots revealed him jet skiing and dirt biking.

"Great birthday and I'm not fat it's the angle," he wrote by a selfie taken on the island.

Justin Bieber
(Photo: Justin's caption by this pic read, 'Great birthday and I'm not fat it's the angle')

After hanging out at the Fountain Bleau hotel, Justin took time to pose for snaps with fans. Naturally, the females took to Twitter to post their pics and messages. [See below].

TMZ is reporting a group of girls called the Miami PD after they were allegedly turfed out of the singer's room during an alleged party at the Miami Beach Edition hotel. Apparently, the girls were annoyed that they were asked to leave after an argument and wanted to retrieve their belongings.

Police reportedly escorted the girls to Justin's room and the matter was resolved. The girls were reportedly invited to rejoin the party.

Later, the singer allegedly picked up an over $3000 liquor tab for his group at a DJ Khaled-hosted party at the Ivy club. He was also seen standing next to former adult performer Lira Galore. Naturally, it's now claimed in some tabloid quarters that they are dating.

Welcome back to Miami, Biebs.

[Images via AKM-GSI/INFPhoto/FameFlyNet/Instagram]