Jessica Simpson sunglasses airport lax nyc heels fashion singer

She's really taking her job as a Weight Watchers spokesperson seriously!

Jessica Simpson arrived at LAX last night with a female pal, and the singer was sporting a grey sweatsuit that highlighted just how much weight she's lost since giving birth to son Ace last July.

The fashion mogul is gearing up for her July 4th wedding to fiancé Eric Johnson, and the couple kicked off the celebrations earlier this week with a co-ed bachelor/bachelorette party at Eveleigh restaurant in West Hollywood. The pair and approximately 40 close friends enjoyed dinner before going dancing at Warwick nightclub.

Life for Jess has really taking a turn for the better since she kicked John Mayer to the curb!