The Victoria's Secret Fashion Show aired tonight on CBS and here is a list of things to watch for. 

This year's $2.5 million Floral Fantasy bra, created by London Jewelers of New York, was worn by supermodel Alessandra Ambrosio. The bra comes with a belt and features two detachable flower pins, and a drop centerpiece that has a 20-carat white diamond, a 12-carat white diamond and a 21-carat pear-shaped ruby. All three items in the Fantasy set together rank up a total of $3 million, according to a London Jewelers spokesperson.

The Floral Fantasy set prompted floral-inspired outfits for the Angels in Bloom section, which included pieces encrusted with gemmed flowers, wings made out of flowers and lots of pinks, reds and greens. In another part of the show, Silver Screen Angels, to celebrate the 10th anniversary of Swarovski, each outfit was adorned with millions of diamonds and crystals. 

Justin Bieber got the crowd wild during his PINK performance and the singer also did an a capella number. More than one model admitted to being a fan of the "Boyfriend" singer's, and model Lilly Aldridge posted on Twitter page "I have Bieber fever!" 

Rihanna and Bruno Mars also performed at the show. The "Diamonds" singer sang her newest hit during the Silver Screen Angels segment of the show and also "Fresh Out the Runway." She dazzled on stage wearing a racy pink lingerie set and later changed into a black gown that she matched with black lace gloves, black hosiery and a pearl choker necklace. 

Click here to watch the Victoria's Secret Fashion Show pre-show special live on Tuesday, Dec. 4, on CBS at 9/8 p.m. Central. The fashion show begins at 10/9 p.m. Central. 

Victoria Secret favorites that strutted the runway include Miranda Kerr, Karlie Kloss and Adriana Lima, among many newcomers. Model Marissa Miller was out of this year's show since she is pregnant.