Pregnant Jessica Simpson Stuns as Bridesmaid for Friend's Wedding

Singer flaunts growing baby bump during friend's ceremony

Here comes the bride(smaid).

A very pregnant Jessica Simpson was part of her friend and Beverly Hills interior decorator Kathryn Sykora's wedding earlier today to one of Eric Johnson's pals, Chris Hetherington.

The soon-to-be mommy (for the second time) stunned in a black, curve-hugging long-sleeve dress with turqouise jewelry.

"Jessica seemed in great spirits despite looking like she was ready to burst, though she was definitely touching her belly quite a bit and moving around slowly," a source tells E! News.

The actress' sister Ashlee Simpson and BFF CaCee Cobb also attended the nuptials, with fellow actress Odette Annable joining Simpson as a bridesmaid.

The bridal party duties are not unfamiliar to Jessica, who served as Cobb's maid of honor in December during her nuptials with Scrubs star Donald Faison.

And soon the bridesmaid will become a bride.

—Reporting by Michelle Falls