Taylor Swift (Getty Images)Conor Kennedy (Splash News)

Taylor Swift is having a summer of love! After incorrectly being linked to Patrick Schwarzenegger earlier this month, the country singer has been getting cozy with another member of the famed Kennedy clan: Robert Kennedy Jr.'s son Conor.

Brian Yale, Paul Doucette, Rob Thomas, and Kyle Cook. (Ward Robinson)So many bands who had their heyday back in the late '90s and early '00s are returning with new music this fall, including Matchbox Twenty. On September 4, the band will release North, their first album of entirely new music since 2002 (they released a greatest hits collection in 2007 with a few new tracks), and on Monday they debuted the music video for their first single, "She's So Mean." In it, the band is picked on by a femme fatale who smashes their equipment, hurls records at them like Frisbees, sets the place on fire as they're playing … and then sprays them all with an extinguisher.

Madonna at a recent stop in Scotland on her MDNA tour. Hardcore Madonna fans thought they were getting the opportunity of a lifetime when, last week, the Material Girl put on a show at Paris' intimate Olympia Club. To secure one of the venue's 2,000 seats, Madonna lovers began standing in line the day before, shelling out between $100 and $350 each for a single ticket. But many concertgoers were puzzled when Madge left the stage after just eight songs and 45 minutes … and never came back. Turns out the show was over.

KISS releases its 20th album, Monster, on October 16. (Dave Hogan/Getty Images)It's not every day that a band releases its 20th album. So for KISS' mega milestone, the iconic rock band is rolling out an online scavenger hunt to get their army hyped for the October 16 release. For seven consecutive days, beginning this past Tuesday, fans have been directed to a different site that has one of eight puzzle pieces that when put together unlock the cover art for Monster — and omg! has piece No. 6. Now that you have it (see below), go to KISS' Facebook page to add it to your collection. The final piece of the puzzle will be released on Monday, just one day before Monster will be available for pre-order iTunes (it's also available now for pre-order on Amazon).

Lohan, von Unwerth, and Gaga at slumber party. (LittleMonsters.com)For those who thought the Lady Gaga-Lindsay Lohan sleepover was too good to be true … now there's photographic evidence. On Thursday, the "Born This Way" singer posted a bunch of pictures from that much buzzed-about July 11 night at the Chateau Marmont in West Hollywood, California, which also included singer Lana Del Rey, on her new social networking site LittleMonsters.com. Although Del Rey is not actually pictured (perhaps she was the one behind the camera), Lohan and Gaga do their best mugging (along with photographer Ellen von Unwerth). Too bad LiLo insisted on striking that tired finger-biting pose she always does! Although the report at the time of the sleepover was that the superstars had a PG night of watching movies and playing board games, the ladies' blurry eyes tell perhaps a different story.

Pink. (Jeff Kravitz/WireImage)Pink has never been the typical pop star, and motherhood certainly hasn't tamed her either. In the music video for "Blow Me (One Last Kiss)," the first single from her new album, The Truth About Love, the sassy singer gets her revenge on a two-timing ex by showing up to his wedding clad in black — and then arranges for a heart-shaped balloon of red wine to be dropped on him, his lovely bride, and their horrified guests. As everyone screams and runs for cover, Pink dances in satisfaction.

Gwen Stefani on GMA (Getty Images)Gwen Stefani helped kick off the weekend right with a feisty, fun, and fashionable appearance with No Doubt on "Good Morning America" on Friday. The band -- celebrating their 25^th anniversary as a group by releasing their sixth studio album, Push and Shove -- woke up New York City with a four-song set performed in Central Park, which included their new song "Settle Down," as well as old faves "It's My Life," "Spiderwebs," and "Underneath It All."

The Killers: Ronnie Vannucci, Mark Stoermer, Flowers, and Dave Keuning. (Steven Lawton/FilmMagic)So much for that hiatus. Two years after The Killers announced they were going to take a much-needed break, the Las Vegas-based band is preparing to release its fourth album, Battle Born, on September 18. And on Thursday, they debuted the video for its first single, "Runaways," an anthemic song which seems to describe the history of frontman Brandon Flowers' relationship with his wife. Although the song is classic Killers, the video is pretty basic: The band performs against a black background, which intermittently flashes the Sin City skyline and a highway, both of which are depicted on Battle Born's cover.