8:47 p.m. ET: On tonight's "Nightline" Qwiki, anchor Terry Moran gives us a preview of Drew Manning, a trainer who gained 72 pounds and then lost it all, a taste of Queen Elizabeth's Diamond Jubilee and a sneak peek of the new "Iron Man 3? movie.

Watch the Qwiki HERE:

Play the Qwiki: Nightline Preview: 6/4/12

8:10 p.m. ET: "Nightline" anchor Cynthia McFadden tweets:

7:02 p.m. ET: Personal trainer Drew Manning, a self-proclaimed fitness addict, started a weight-gain journey about a year ago to better understand what his overweight clients go through. He let himself go completely and chronicled the process on his website, Fit2Fat2Fit.com.

Credit: Drew Manning

After a year, Manning got himself down close to his original weight - he was actually three pounds lighter than when he started because he lost muscle mass. Want to find out how he did it? Watch Drew's six tips for losing weight in this video HERE:

5:56 p.m. ET: In today's battle of the celebrities: On one side of the courtroom, Kevin Costner. On the other side, Stephen Baldwin.

Kevin Costner and  Stephen Baldwin met in a New Orleans court to hash out a lawsuit over investments in a device used to try to clean up BP's 2010 oil spill in the Gulf of Mexico. Baldwin is suing Costner claiming that Costner and a business partner duped Baldwin and a friend out of their shares of an $18 million deal for BP to buy oil-separating centrifuges after the April 2010 spill.

Credit: AP Photo

Read the full story HERE.

3:35 p.m. ET: Where's Waldo? Shot of the crowd gathered at Tower Bridge on the banks of the River Thames to view the spectacle of the Thames Diamond Jubilee Pageant in London on June 3, 2012.

Credit: Getty Images

1:46 p.m. ET: DEVELOPING: George Zimmerman's online defense fund has been receiving about $1,000 a day in donations, but the pace picked up after a judge required Zimmerman to return to jail, according to his attorney Mark O'Mara.

Read the latest HERE.

12:50 p.m. ET: "Iron Man" fan rejoice! Marvel Studio announced today that they have officially suited up for the next superhero epic, "Iron Man 3," which has begun filming in Wilmington, N.C.

The studio also revealed the first image of filming on set today through Twitter. It shows actor Robert Downey Jr., who plays Tony Stark-Iron Man in the series, standing in front of a wall of Iron Man suits of armor.

Credit: Marvel Studios, @Iron_Man

Read more details about the announcement HERE.

10:48 a.m. ET: DEVELOPING: The identities of eight alleged victims of child abuse at the hands of former Penn State football coach Jerry Sandusky will be made public during the trial that begins this month, a judge ruled today.

Read ABC's Colleen Curry's story HERE to check for updates.

10:12 a.m. ET: ABC's Audrey Wozniak and Gloria Rivera note that today marks the 23rd anniversary of the Tiananmen Square massacre, but in China any mention of that day remains forbidden.

Credit: AP Photo

9:35 a.m. ET: A new development in the tit-for-tat legal proceedings of George Zimmerman, the neighborhood watch captain who killed 17-year-old Trayvon Martin came out over the weekend.

ABC's Matt Gutman reports that Zimmerman arrived at the Seminole County Jail in Sanford, Fla., early Sunday afternoon to turn himself in after a judge revoked his bail. Zimmerman and his wife Shelly had allegedly tried to hide from the court the more than $135,000 in cash they had amassed in donated legal funds, so Circuit Court Judge Kenneth Lester ordered him back in jail. Read the full details of what happened HERE.

Zimmerman being lead to jail. Credit: Getty Images