Want to know where Britney Spears is today? You can either follow the smell of wig glue and bubblegum through L.A., like the paps do, or just keep your eyes on this here site:

E! News has learned that Brit, who on Monday did a table read for her upcoming role on CBS’ How I Met Your Mother, will be on the Fox lot today for more rehearsals. The episode, in which the flirty celeb plays a flirty receptionist, tapes later this week. Way to show your range, girlfriend!

Spears is taking a break this week from her near-daily dance rehearsals while she focuses on her first TV acting gig since Will and Grace in 2006.

Can TV save the radio star?

Rock band Van Halen’s reunion tour fell into disarray on Monday when it announced it would postpone all shows through April 19 while guitarist Eddie Van Halen undergoes tests for an unspecified medical condition.

The news came a week after the group postponed four shows for the same reason.

Seventeen shows are now affected, beginning Tuesday in Charlottesville, Va., and running through April 15 in Baltimore, which was one of the four postponed last week. The next scheduled show is set for April 19 in Las Vegas.

According to organizers, Van Halen, 53, who has battled cancer and substance abuse, “is currently under doctors’ care” and will “continue medical tests to define a course of treatment.” No further details were made available.

Fans are being asked to keep their tickets, which will be honored at makeup dates to be announced.

Van Halen returned to the road last fall with original lead singer David Lee Roth for the first time in 20-plus years. The tour, which features Eddie Van Halen’s teenage son Wolfgang on bass in place of co-founder Michael Anthony, has routinely sold out North American arenas.

MONTE CARLO, Monaco - Canadian singer Celine Dion and R&B queen Patti LaBelle were honoured at the World Music Awards for their outstanding careers, while British newcomer Mika took home a clutch of prizes.

Dion, who has sold 200 million albums worldwide, received the highest accolade - the Legend Award - at the star-studded ceremony in Monaco on Sunday. In presenting the honour, the tiny principality’s Prince Albert said Dion’s voice “soothes the world’s hearts and creates smiles of love across the face of the world.”

Recalling her start as the youngest performer among 14 musical siblings, Dion dedicated the award to her family.

“Every time I go on stage, it’s all of them going on stage with me,” she said in her acceptance speech in English and French.

Dion then performed “Taking Chances,” the first single from her forthcoming album of the same name, slated for release later this month.

The 39-year-old diva from Quebec already holds a World Music Awards prize for the world’s best-selling female artist of all time. She won the so-called Diamond Award in 2004.