Buzzmakers: Kristen's Admission & James Holmes

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1. Kristen Stewart Apologizes for Cheating

Kristen Stewart shocked fans everywhere when she publicly apologized for cheating on boyfriend Robert Pattinson with her Snow White and the Huntsman director Rupert Sanders.

Stewart told People in a statement Wednesday, "I'm deeply sorry for the hurt and embarrassment I've caused to those close to me and everyone this has affected. This momentary indiscretion has jeopardized the most important thing in my life, the person I love and respect the most, Rob. I love him, I love him, I'm so sorry."

2. Celebs React to Tragic 'Dark Knight' Shooting

A midnight screening of The Dark Knight Rises in Aurora, Colorado turned deadly on July 20th when James Holmes, a 24-year-old, allegedly opened fire in the theater.

According to multiple reports, at least 12 people were killed and about 50 others injured after the gunman released what witnesses described as a smoke bomb and then began firing at moviegoers inside the theater.

The suspect, who was heavily-armed and wearing a bulletproof vest, was apprehended by police in the theater's parking lot, according to Aurora Police Chief Dan Oates.

Christian Bale, the star of director Christopher Nolan's Batman trilogy, spoke out about the tragic Aurora, Colorado theater shooting that killed at least 12 people and wounded 58.

"Words cannot express the horror that I feel," Bale said in a statement. "I cannot begin to truly understand the pain and grief of the victims and their loved ones, but my heart goes out to them."

Click here for a compilation of the latest celebrity reactions:

3. Robin Roberts Going on Medical Leave

After announcing her MDS diagnosis last month, Robin Roberts is reportedly planning to take medical leave from Good Morning America for a bone marrow transplant.

According to The Associated Press, the morning news anchor will most likely begin her absence towards the end of August or early September. At a Television Critics Association conference on Thursday, Roberts reportedly named Barbara Walters, Diane Sawyer, Katie Couric and Kelly Ripa as some of the guests who are set to sub in her place.

"It's fascinating-slash-scary how to prepare yourself for something like this," she said, admitting that she does "go through moments of fatigue."

Myelodysplastic syndrome (MDS) (formerly known as preleukemia) is a rare blood and bone marrow disorder resulting in abnormally low blood cell levels. The exact cause of MDS is still unknown.

4. 'DWTS: All Stars' Cast Announced!

After three months of conjecture, the fifteenth cast of Dancing with the Stars, which will see their most popular contestants return for one more shot at the Mirror Ball Trophy, was just announced!

Dancing with the Stars: All-Stars will feature Gilles Marini, Pamela Anderson, Kelly Monaco, Shawn Johnson, Melissa Rycroft, Joey Fatone, Helio Castroneves, Drew Lachey, Bristol Palin, Apolo Anton Ono, Kirstie Alley and Emmit Smith.

Plus, for the first time, fans will be able to vote for the final All-Star -- it will be either Kyle Massey, Sabrina Bryan or Carson Kressley! Voting is now open and closes August 24 at 12 p.m. PST -- click here to vote!

Conrad Green, DWTS executive producer, says, "We wanted to pick the best of the best – we wanted people who celebrated the range of dancing. This felt like the perfect time do [an All-Stars season] because there was a genuine appetite from our audience to do it again."

Dancing with the Stars: All-Stars premieres September 24 at 8 p.m. on ABC.

5. Pregnant Melissa Joan Hart is Having A ...

Although Melissa Joan Hart doesn't want to know the gender of her baby before the birth, the ladies of CBS' The Talk may have ruined the surprise for her.

If old wives' tales hold any credence, the mother of two will be having her first girl.

The co-hosts administered two unscientific tests: the first judged based on how Melissa was carrying and the second on what she was craving.

The Melissa & Joey star tested positive for a girl in both cases, as she was perceived to be carrying the baby high and craving sweets, but the ladies hedged their bets just in case.

"We won't know until the fall, for sure," said Julie. "So even if we're wrong, we have a gift that's going to work either way."

Julie presented the expectant mom with a pink and blue onesie.